Registration Dossier

Identification

Chemical structure
Display Name:
Iron hydroxide oxide yellow
EC Number:
257-098-5
EC Name:
Iron hydroxide oxide yellow
CAS Number:
51274-00-1
Molecular formula:
Fe(OH)O
IUPAC Name:
Iron hydroxide oxide

Type of Substance

Composition:
mono-constituent substance
Origin:
inorganic

Substance Identifiers open all close all

  • 257-098-5
  • 51274-00-1
  • 77492
  • PIGMENT YELLOW 42
  • Goethite
  • E172
  • CI 77492
  • Pigment Yellow 42
  • Bayferrox
  • C.I. 77492
  • C.I. Pigment Yellow 42
  • CathayCoat Yellow
  • CathayCoat Yellow Iron Oxide
  • CathayPure Yellow
  • CathayPure Yellow Iron oxide
  • Colortherm
  • FerroTint Yellow
  • FerroTint Yellow Iron Oxide
  • Ferroxon Yellow
  • GEH
  • Iron oxide yellow
  • Iron(III)oxide hydroxide
  • Lavanya Sooraj / Yellow Iron Oxide
  • PJ 920
  • Piirox GC913
  • Piirox® A920
  • Piirox® I913
  • Piirox® K910M
  • Procter Johnson Yellow Iron Oxide
  • Spectrum Yellow
  • Spectrum Yellow Iron Oxide
  • Sumicos Yellow 2213C
  • TAROX IRON OXIDE LEMON
  • TAROX IRON OXIDE LL-100DK
  • TAROX IRON OXIDE LL-100HP
  • TAROX IRON OXIDE LL-100P
  • TAROX IRON OXIDE LL-50
  • TAROX IRON OXIDE LL-XLO
  • TAROX IRON OXIDE OCHER 1P
  • TAROX IRON OXIDE STN-1
  • TAROX IRON OXIDE YM1100
  • Yellow Pigment G-2
  • Yellow iron oxide
  • Yellow iron oxide 313
  • Yellow pigment G-1
  • iron hydroxide oxide
  • iron hydroxide oxide yellow
  • ossido di ferro giallo
  • ossido di ferro giallo sintetico
  • synthetic yellow iron oxide
  • Bayferrox 3905
    (Grade)
    Bayferrox 920
    (Grade)
    Bayferrox 920 Z
    (Grade)
    C.I. 77492
    (C.I.)
    C.I. Pigment Yellow 42
    (C.I.), (No other type specified)
    C.I. pigment, yellow 42
    (No other type specified)
    Pigment Yellow 42
    (No other type specified)
    Yellow Iron Oxide (CI PY 42)
    (chemical name)

    Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Range:
    >= 12 - <= 200 nm
    Range of length:
    >= 20 - <= 700 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 350 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 25 nm
    Percentile:
    D50
    Range:
    >= 20 - <= 60 nm
    Percentile:
    D90
    Range:
    >= 50 - <= 120 nm
    Range of length:
    >= 10 - <= 120 nm
    Range of aspect ratio (:1):
    >= 1 - <= 4
    Fraction of constituent particles in the size range 1-100 nm:
    >= 85 - <= 95 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    gamma-FeOOH (Lepidocrocite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 10 - <= 25 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Iron hydroxide oxide yellow_nano_alpha_FeOOH

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Range:
    >= 12 - <= 200 nm
    Range of length:
    >= 20 - <= 600 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 350 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Iron hydroxide oxide yellow - BC_Nano_gamma-FeOOH

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 25 nm
    Percentile:
    D50
    Range:
    >= 20 - <= 60 nm
    Percentile:
    D90
    Range:
    >= 50 - <= 120 nm
    Range of length:
    >= 10 - <= 120 nm
    Range of aspect ratio (:1):
    >= 1 - <= 4
    Fraction of constituent particles in the size range 1-100 nm:
    >= 85 - <= 95 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    gamma-FeOOH (Lepidocrocite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 10 - <= 25 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Iron hydroxide oxide yellow - Nano_alpha-FeOOH

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Range:
    >= 12 - <= 200 nm
    Range of length:
    >= 20 - <= 600 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 350 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Legal Entity Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    ca. 99 %
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 50 nm
    Range:
    >= 40 - <= 80 nm
    Percentile:
    D50
    Typical value:
    ca. 80 nm
    Range:
    >= 60 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 180 nm
    Range:
    >= 150 - <= 210 nm
    Typical length:
    ca. 184 nm
    Range of length:
    >= 150 - <= 210 nm
    Typical aspect ratio (:1):
    ca. 2.1 :1
    Range of aspect ratio (:1):
    >= 1 - <= 11
    Fraction of constituent particles in the size range 1-100 nm:
    >= 57 - <= 67 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 15 m²/g
    Range of specific surface area:
    >= 10 - <= 20 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    ca. 99 %
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 15 nm
    Range:
    >= 5 - <= 25 nm
    Percentile:
    D50
    Typical value:
    ca. 31 nm
    Range:
    >= 20 - <= 60 nm
    Percentile:
    D90
    Typical value:
    ca. 80 nm
    Range:
    >= 50 - <= 120 nm
    Typical length:
    ca. 53 nm
    Range of length:
    >= 10 - <= 120 nm
    Typical aspect ratio (:1):
    ca. 2 :1
    Range of aspect ratio (:1):
    >= 1 - <= 4
    Fraction of constituent particles in the size range 1-100 nm:
    >= 85 - <= 95 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    gamma-FeOOH (Lepidocrocite)
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 17 m²/g
    Range of specific surface area:
    >= 10 - <= 25 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Iron hydroxide oxide yellow - nano_alpha-FeOOH

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    25 nm
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Typical value:
    50 nm
    Range:
    >= 30 - <= 100 nm
    Percentile:
    D90
    Typical value:
    120 nm
    Range:
    >= 50 - <= 200 nm
    Range of length:
    >= 20 - <= 600 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 25 m²/g
    Range of specific surface area:
    >= 5 - <= 350 m²/g
    Skeletal density:
    ca. 4.06 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Iron hydroxide oxide yellow - Nano_alpha-FeOOH

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    25 nm
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Typical value:
    50 nm
    Range:
    >= 30 - <= 100 nm
    Percentile:
    D90
    Typical value:
    120 nm
    Range:
    >= 50 - <= 200 nm
    Range of length:
    >= 20 - <= 600 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Gothite)
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 25 m²/g
    Range of specific surface area:
    >= 5 - <= 350 m²/g
    Skeletal density:
    ca. 4.06 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    NANO- yellow

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    ca. 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 135 nm
    Range:
    >= 85 - <= 210 nm
    Percentile:
    D50
    Typical value:
    ca. 215 nm
    Range:
    >= 109 - <= 470 nm
    Percentile:
    D90
    Typical value:
    ca. 310 nm
    Range:
    >= 150 - <= 785 nm
    Typical length:
    ca. 654.18 nm
    Range of length:
    >= 357.61 - <= 950.75 nm
    Typical lateral dimension 1:
    ca. 164.78 nm
    Range of lateral dimension 1:
    >= 97.58 - <= 232 nm
    Typical aspect ratio (:1):
    ca. 4.2 :1
    Range of aspect ratio (:1):
    >= 2.3 - <= 6.1
    Fraction of constituent particles in the size range 1-100 nm:
    >= 55.32 - <= 70 %

    Crystallinity

    Structuresopen allclose all
    Structure:
    crystalline
    Name:
    goethita (α-FeOOH)
    Pure structure:
    yes
    Typical composition:
    ca. 78.5 %
    Range:
    >= 75 - <= 80 %
    Crystal system:
    orthorhombic
    Structure:
    amorphous
    Pure structure:
    yes
    Typical composition:
    ca. 22 %
    Range:
    >= 21 - <= 25 %

    Specific surface area

    Typical specific surface area:
    ca. 12.9 m²/g
    Range of specific surface area:
    >= 12.76 - <= 13.04 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Iron hydroxide oxide yellow - Nano_alpha-FeOOH

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 10 nm
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Typical value:
    ca. 15 nm
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 20 nm
    Range:
    >= 12 - <= 200 nm
    Range of length:
    >= 20 - <= 600 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 100 m²/g
    Range of specific surface area:
    >= 5 - <= 350 m²/g
    Skeletal density:
    ca. 3.8 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Goethite (Fe(OH)O)
    EC Number:
    215-176-6
    EC Name:
    Goethite (Fe(OH)O)
    CAS Number:
    1310-14-1
    Molecular formula:
    FeHO2
    IUPAC Name:
    hydroxy(oxo)iron
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    60 nm
    Range:
    >= 50 - <= 70 nm
    Percentile:
    D50
    Typical value:
    100 nm
    Range:
    >= 90 - <= 100 nm
    Percentile:
    D90
    Typical value:
    160 nm
    Range:
    >= 100 - <= 200 nm
    Typical length:
    568 nm
    Range of length:
    >= 300 - <= 700 nm
    Typical aspect ratio (:1):
    5.85 :1
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes
    Crystal system:
    orthorhombic

    Specific surface area

    Typical specific surface area:
    19.689 m²/g
    Range of specific surface area:
    > 9 - < 29 m²/g
    Typical volume specific surface area:
    83.737 m²/cm³
    Range of volume specific surface area:
    > 73 - < 93 m²/cm³
    Skeletal density:
    4.253 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    50 nm
    Range:
    >= 40 - <= 60 nm
    Percentile:
    D50
    Typical value:
    90 nm
    Range:
    >= 70 - <= 100 nm
    Percentile:
    D90
    Typical value:
    170 nm
    Range:
    >= 110 - <= 200 nm
    Typical length:
    600 nm
    Range of length:
    >= 300 - <= 700 nm
    Typical aspect ratio (:1):
    6.34 :1
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-feOOH (Goethite)
    Pure structure:
    yes
    Crystal system:
    orthorhombic

    Specific surface area

    Typical specific surface area:
    14.702 m²/g
    Range of specific surface area:
    > 5 - < 25 m²/g
    Typical volume specific surface area:
    65.586 m²/cm³
    Range of volume specific surface area:
    > 60 - < 70 m²/cm³
    Skeletal density:
    4.461 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Remarks:
    rods
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    > 97 %
    Range:
    >= 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 60 nm
    Range:
    >= 5 - <= 90 nm
    Percentile:
    D50
    Typical value:
    ca. 90 nm
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 150 nm
    Range:
    >= 12 - <= 200 nm
    Typical length:
    ca. 500 nm
    Range of length:
    >= 20 - <= 700 nm
    Typical aspect ratio (:1):
    ca. 5.6 :1
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-FeOOH (Goethite)
    Pure structure:
    yes
    Crystal system:
    orthorhombic

    Specific surface area

    Typical specific surface area:
    ca. 20 m²/g
    Range of specific surface area:
    >= 5 - <= 350 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D90
    Typical value:
    15.17 μm
    Range:
    > 14.74 - < 15.59 μm
    Percentile:
    D50
    Typical value:
    4.8 μm
    Range:
    > 4.63 - < 4.96 μm
    Percentile:
    D10
    Typical value:
    0.82 μm
    Range:
    > 0.81 - < 0.84 μm
    Percentile:
    D50
    Typical value:
    14 nm
    Range:
    > 11 - < 17 nm
    Typical length:
    ca. 520 nm
    Range of length:
    > 100 - < 1 400 nm
    Typical aspect ratio (:1):
    ca. 37 :1
    Range of aspect ratio (:1):
    >= 10 - <= 175
    Fraction of constituent particles in the size range 1-100 nm:
    1 - ca. 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Goethite
    Pure structure:
    yes
    Typical composition:
    ca. 100 %
    Range:
    > 80 - < 100 %
    Crystal system:
    orthorhombic

    Specific surface area

    Typical specific surface area:
    ca. 15 m²/g
    Range of specific surface area:
    >= 15 - <= 15 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.02 μm
    Range:
    >= 0.016 - <= 0.026 μm
    Percentile:
    D50
    Typical value:
    ca. 0.043 μm
    Range:
    >= 0.027 - <= 0.065 μm
    Percentile:
    D90
    Typical value:
    >= 0.155 μm
    Range:
    >= 0.062 - <= 0.68 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 2.8 :1
    Range of aspect ratio (:1):
    >= 2.1 - <= 5.7
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 16.6 m²/g
    Range of specific surface area:
    >= 8.1 - <= 22.8 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.007 μm
    Range:
    >= 0.006 - <= 0.008 μm
    Percentile:
    D50
    Typical value:
    ca. 0.012 μm
    Range:
    >= 0.011 - <= 0.013 μm
    Percentile:
    D90
    Typical value:
    >= 0.021 μm
    Range:
    >= 0.019 - <= 0.022 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 4 :1
    Range of aspect ratio (:1):
    >= 3.8 - <= 4.2
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 83.8 m²/g
    Range of specific surface area:
    >= 75.7 - <= 95.1 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.019 μm
    Range:
    >= 0.019 - <= 0.019 μm
    Percentile:
    D50
    Typical value:
    ca. 0.045 μm
    Range:
    >= 0.045 - <= 0.045 μm
    Percentile:
    D90
    Typical value:
    >= 0.125 μm
    Range:
    >= 0.125 - <= 0.125 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 2.4 :1
    Range of aspect ratio (:1):
    >= 2.4 - <= 2.4
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 13.8 m²/g
    Range of specific surface area:
    >= 13.8 - <= 13.8 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    yes
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    Surface treatments
    Surface treatment name:
    Surface Treatment Nanoform 3.3
    Surface treatment
    Order:
    #1
    External layer:
    hydrophilic
    Description:
    addition of aluminum sulphate in the water slurry with the pigment, and precipitation with caustic soda.

    Surface functionalisatioon: Alumina - Molar Ratio 0.002:1
    Molar Ratio:0.002:1
    Percentage of coverage of particle surface, %:
    100
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.007 μm
    Range:
    >= 0.007 - <= 0.007 μm
    Percentile:
    D50
    Typical value:
    ca. 0.011 μm
    Range:
    >= 0.011 - <= 0.011 μm
    Percentile:
    D90
    Typical value:
    >= 0.018 μm
    Range:
    >= 0.018 - <= 0.018 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 3.9 :1
    Range of aspect ratio (:1):
    >= 3.9 - <= 3.9
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 102 m²/g
    Range of specific surface area:
    >= 102 - <= 102 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    yes
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    Surface treatments
    Surface treatment name:
    Surface Treatment Nanoform 3.4
    Surface treatment
    Order:
    #1
    External layer:
    hydrophilic
    Description:
    addition of aluminum sulphate in the water slurry with the pigment, and precipitation with caustic soda.

    Surface functionalisatioon: Alumina - Molar Ratio 0.002:1
    Molar Ratio:0.002:1
    Percentage of coverage of particle surface, %:
    100
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.008 μm
    Range:
    >= 0.008 - <= 0.008 μm
    Percentile:
    D50
    Typical value:
    ca. 0.011 μm
    Range:
    >= 0.011 - <= 0.011 μm
    Percentile:
    D90
    Typical value:
    >= 0.017 μm
    Range:
    >= 0.017 - <= 0.017 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 3.8 :1
    Range of aspect ratio (:1):
    >= 3.8 - <= 3.8
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 86.9 m²/g
    Range of specific surface area:
    >= 86.9 - <= 86.9 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    yes
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    Surface treatments
    Surface treatment name:
    Surface Treatment Nanoform 3.5
    Surface treatment
    Order:
    #1
    External layer:
    hydrophilic
    Description:
    Addition of sodium phosphate is made into the water slurry with the pigment. This is followed by filtration and drying.

    Surfae Functionalisation: Phosphate, molar ratio 0.0018:1
    Percentage of coverage of particle surface, %:
    100
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.019 μm
    Range:
    >= 0.019 - <= 0.019 μm
    Percentile:
    D50
    Typical value:
    ca. 0.045 μm
    Range:
    >= 0.045 - <= 0.045 μm
    Percentile:
    D90
    Typical value:
    >= 0.125 μm
    Range:
    >= 0.125 - <= 0.125 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 2.4 :1
    Range of aspect ratio (:1):
    >= 2.4 - <= 2.4
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 13.8 m²/g
    Range of specific surface area:
    >= 13.8 - <= 13.8 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    yes
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    Surface treatments
    Surface treatment name:
    Surface Treatment Nanoform 3.3
    Surface treatment
    Order:
    #1
    External layer:
    hydrophilic
    Description:
    addition of aluminum sulphate in the water slurry with the pigment, and precipitation with caustic soda.

    Surface functionalisatioon: Alumina - Molar Ratio 0.002:1
    Molar Ratio:0.002:1
    Percentage of coverage of particle surface, %:
    100
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.007 μm
    Range:
    >= 0.007 - <= 0.007 μm
    Percentile:
    D50
    Typical value:
    ca. 0.011 μm
    Range:
    >= 0.011 - <= 0.011 μm
    Percentile:
    D90
    Typical value:
    >= 0.018 μm
    Range:
    >= 0.018 - <= 0.018 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 3.9 :1
    Range of aspect ratio (:1):
    >= 3.9 - <= 3.9
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 102 m²/g
    Range of specific surface area:
    >= 102 - <= 102 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    yes
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    Surface treatments
    Surface treatment name:
    Surface Treatment Nanoform 3.4
    Surface treatment
    Order:
    #1
    External layer:
    hydrophilic
    Description:
    addition of aluminum sulphate in the water slurry with the pigment, and precipitation with caustic soda.

    Surface functionalisatioon: Alumina - Molar Ratio 0.002:1
    Molar Ratio:0.002:1
    Percentage of coverage of particle surface, %:
    100
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.008 μm
    Range:
    >= 0.008 - <= 0.008 μm
    Percentile:
    D50
    Typical value:
    ca. 0.011 μm
    Range:
    >= 0.011 - <= 0.011 μm
    Percentile:
    D90
    Typical value:
    >= 0.017 μm
    Range:
    >= 0.017 - <= 0.017 μm
    Typical length:
    ca.
    Range of length:
    >= <=
    Typical aspect ratio (:1):
    ca. 3.8 :1
    Range of aspect ratio (:1):
    >= 3.8 - <= 3.8
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Iron(III) oxide hydroxide
    Pure structure:
    yes
    Typical composition:
    ca. 98 %
    Range:
    >= 92 - ca. 99 %

    Specific surface area

    Typical specific surface area:
    ca. 86.9 m²/g
    Range of specific surface area:
    >= 86.9 - <= 86.9 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    yes
    Does the set contain both treated and non-surface treated nanoforms?:
    yes
    Surface treatments
    Surface treatment name:
    Surface Treatment Nanoform 3.5
    Surface treatment
    Order:
    #1
    External layer:
    hydrophilic
    Description:
    Addition of sodium phosphate is made into the water slurry with the pigment. This is followed by filtration and drying.

    Surface Functionalisation: Phosphate, molar ratio 0.0018
    Percentage of coverage of particle surface, %:
    100
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    ca. 100 %
    Range:
    ca. 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 41 nm
    Range:
    >= 35 - <= 47 nm
    Percentile:
    D50
    Typical value:
    ca. 96 nm
    Range:
    >= 89 - <= 103 nm
    Percentile:
    D90
    Typical value:
    ca. 163 nm
    Range:
    >= 154 - <= 173 nm
    Typical length:
    ca. 620 nm
    Range of length:
    >= 570 - <= 660 nm
    Typical aspect ratio (:1):
    ca. 6.4 :1
    Range of aspect ratio (:1):
    >= 5.5 - <= 8
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - < 60 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    goethite
    Pure structure:
    yes
    Typical composition:
    ca. 100 %
    Range:
    ca. 100 - ca. 100 %
    Crystal system:
    orthorhombic
    Bravais lattice:
    primitive orthorhombic

    Specific surface area

    Typical specific surface area:
    ca. 25 m²/g
    Range of specific surface area:
    > 20 - < 30 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    no


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Particle size distribution and range

    Particle size distribution and range
    Range of length:
    420 nm
    Range of lateral dimension 1:
    70 nm

    Specific surface area

    Range of specific surface area:
    14.5 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Surface treatments
    External layer:
    hydrophilic


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Iron hydroxide oxide yellow
    EC Number:
    257-098-5
    EC Name:
    Iron hydroxide oxide yellow
    CAS Number:
    51274-00-1
    Molecular formula:
    Fe(OH)O
    IUPAC Name:
    Iron hydroxide oxide

    Characterisation of nanoforms

    Particle size distribution and range

    Particle size distribution and range
    Range of length:
    410 nm
    Range of lateral dimension 1:
    70 nm

    Specific surface area

    Range of specific surface area:
    14.5 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no