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EC number: 231-113-5 | CAS number: 7440-03-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Data waiving:
- other justification
- Justification for data waiving:
- other:
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 170
- Principles of method if other than guideline:
- dry sieve analysis
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Size:
- 3 350 µm
- Distribution:
- 0 %
- Remarks on result:
- other: sum of residue
- Size:
- 2 000 µm
- Distribution:
- 0.07 %
- Remarks on result:
- other: sum of residue
- Size:
- 1 000 µm
- Distribution:
- 8.84 %
- Remarks on result:
- other: sum of residue
- Size:
- 500 µm
- Distribution:
- 28.65 %
- Remarks on result:
- other: sum of residue
- Size:
- 250 µm
- Distribution:
- 55.21 %
- Remarks on result:
- other: sum of residue
- Size:
- 125 µm
- Distribution:
- 81.4 %
- Remarks on result:
- other: sum of residue
- Size:
- 75 µm
- Distribution:
- 94.19 %
- Remarks on result:
- other: sum of residue
- Size:
- 50 µm
- Distribution:
- 98.13 %
- Remarks on result:
- other: sum of residue
- Size:
- 40 µm
- Distribution:
- 99.01 %
- Remarks on result:
- other: sum of residue
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187
- Principles of method if other than guideline:
- laser diffraction with dry dispersion
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- 991 µm
- Percentile:
- D50
- Mean:
- 346.5 µm
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- D10
- Mean:
- 123.8 µm
- Remarks on result:
- other: st. dev. not determined
- Percentile:
- D50
- Mean:
- 346.5 µm
- Remarks on result:
- other: st. dev. not determined
- Percentile:
- D90
- Mean:
- 695.2 µm
- Remarks on result:
- other: st. dev. not determined
- Endpoint:
- particle size distribution (granulometry)
- Remarks:
- dry sieve method
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12-16 October 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 170
- Version / remarks:
- dry sieve method
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- > 0 - < 40 µm
- Distribution:
- 7.52 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- No.:
- #2
- Size:
- > 40 - < 50 µm
- Distribution:
- 4.68 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- No.:
- #3
- Size:
- > 50 - < 100 µm
- Distribution:
- 25.79 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- No.:
- #4
- Size:
- > 100 - < 125 µm
- Distribution:
- 11.11 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- No.:
- #5
- Size:
- > 125 - < 250 µm
- Distribution:
- 42.44 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- No.:
- #6
- Size:
- > 250 - < 500 µm
- Distribution:
- 8.4 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- No.:
- #7
- Size:
- > 500 - < 1 000 µm
- Distribution:
- 0.01 %
- Remarks on result:
- other:
- Remarks:
- residue on the sieve
- Conclusions:
- For dry sieve analysis the following sieves were used: 1000, 500, 250, 125, 100, 75, 50 and 40 µm. The determined range was between 40 µm for Rx ≥ 90% and 250 µm for Rx ≤ 10%. The retained material on the pan was 51.44 g (7.41%). Using the dry sieve method, it was found that ≥ 90% of all the particles of the test item was found on the 40 µm sieve and therefore are bigger than 40 µm and ≤ 10% of all the particles were found on the 250 µm sieve and therefore are bigger than 250 µm.
- Endpoint:
- particle size distribution (granulometry)
- Remarks:
- laser diffraction
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12-16 October 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187, CIPAC MT 166
- Version / remarks:
- Laser diffraction
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- 484.51 µm
- Remarks on result:
- other: The aerodynamic diameter (MMAD) was calculated to be 484.51 µm. The density was provided by the sponsor to be 8.1997 g/cm3.
- Percentile:
- D10
- Mean:
- 58.44 µm
- St. dev.:
- 0.84
- Remarks on result:
- other: mean value was calculated from 3 measured values
- Percentile:
- D50
- Mean:
- 169.2 µm
- St. dev.:
- 2.14
- Remarks on result:
- other: mean value was calculated from 3 measured values
- Percentile:
- D90
- Mean:
- 358.66 µm
- St. dev.:
- 5.03
- Remarks on result:
- other: mean value was calculated from 3 measured values
- Conclusions:
- Volume based particle size distribution of FeNb Fines M45
L10 D (v, 0.1) [µm]: 58.44
L50 D (v, 0.5) [µm]: 169:20
L90 D (v, 0.9) [µm]: 358.66
The aerodynamic diameter (MMAD) was calculated to be 484.51 µm.
Referenceopen allclose all
Tap Density
The tap density after 50 'taps' was determined to be 4.45 g/mL.
The following table shows the results of the dry sieve analysis.
Weight W |
Volume V |
Tap Density DT |
969.089 |
218 |
4.45 |
953.755 |
215 |
4.44 |
|
Mean: |
4.45 |
Dry Sieve Analysis
The mass of the sample to be taken for analysis was calculated as follows:
m = n · D · 20 g
n = number of sieves
D = tap density (g/mL) of granular material
n = 9, D = 4.45 kg/L,
m = 9 · 4.45 · 20 = 801g
Actual weight in all tests: 97.2 g
The particle size distribution of the test item Ferro-niobium < 2 mm was specified by the range [x1 x2] of two sieves where Rx ≥ 90 % and Rx ≤ 10 %.
The table shows the determined particle size distribution of the test item Ferro-niobium < 2 mm.
|
Test 1 |
Test 2 |
Mean |
||
sieve |
mass gx[g] |
mass gx[g] |
mass gx[g] |
residue rx[%] |
sum Rx |
Pan |
7.68 |
7.75 |
7.72 |
0.97 |
99.98 |
40 |
6.57 |
7.52 |
7.05 |
0.88 |
99.01 |
50 |
30.98 |
32.04 |
31.51 |
3.94 |
98.13 |
75 |
102.46 |
101.97 |
102.22 |
12.79 |
94.19 |
125 |
212.48 |
206.14 |
209.31 |
26.19 |
81.40 |
250 |
214.86 |
209.72 |
212.29 |
26.56 |
55.21 |
500 |
156.81 |
159.77 |
158.29 |
19.81 |
28.65 |
1000 |
66.65 |
73.46 |
70.06 |
8.77 |
8.84 |
2000 |
0.60 |
0.54 |
0.57 |
0.07 |
0.07 |
3350 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
The determined range was:
x1 = 75 µm where Rx ≥ 90%
x2 = 1000 µm where Rx ≤ 10%.
Particle Size Distribution of Ferro-niobium < 0.4 mm
Measurement
|
1 [µm] |
2 [µm] |
3 [µm] |
4 [µm] |
Average [µm] |
L10 |
136.359 |
136.641 |
99.208 |
127.879 |
123.8 |
L50(Median particle size) |
348.337 |
350.424 |
318.304 |
368.961 |
346.5 |
L90 |
691.471 |
690.224 |
677.186 |
721.846 |
695.2 |
The MMAD (mass median aerodynamic diameter) can be calculated using the given density of the test item (ρ= 8.1997 g/cm³) with the following equation:
MMAD = MMD *ρ0.5
MMAD = 991 µm
The particle size distribution of FeNb Fines M45was specified by the range [x1 x2] of two sieves where Rx ≥ 90 % and Rx ≤ 10 %.
Particle size distribution of FeNb Fines M45 (test 1)
sieve |
mass sieve before [g] |
mass sieve after [g] |
mass [g] |
Pan |
411.47 |
460.47 |
49.00 |
40 |
263.27 |
288.49 |
25.22 |
50 |
264.79 |
420.82 |
156.03 |
100 |
271.67 |
338.69 |
67.02 |
125 |
270.25 |
528.70 |
258.45 |
250 |
240.57 |
291.75 |
51.18 |
500 |
313.47 |
313.60 |
0.13 |
1000 |
363.47 |
363.47 |
0.00 |
Particle size distribution of FeNb Fines M45 (test 2)
sieve |
mass sieve before [g] |
mass sieve after [g] |
mass [g] |
Pan |
411.48 |
453.77 |
42.29 |
40 |
263.57 |
295.18 |
31.61 |
50 |
264.90 |
422.20 |
157.30 |
100 |
271.81 |
339.79 |
67.98 |
125 |
270.47 |
527.64 |
257.17 |
250 |
240.70 |
291.54 |
50.84 |
500 |
313.55 |
313.57 |
0.02 |
1000 |
363.49 |
363.50 |
0.01 |
Particle size distribution of FeNb Fines M45 (mean values of test 1 and 2)
sieve |
mass gx [g] |
Residue rx [%] |
Sum Rx [%] |
Pan |
45.65 |
7.52 |
99.95 |
40 |
28.42 |
4.68 |
92.43 |
50 |
156.67 |
25.79 |
87.75 |
100 |
67.50 |
11.11 |
61.96 |
125 |
257.81 |
42.44 |
50.85 |
250 |
51.01 |
8.40 |
8.41 |
500 |
0.08 |
0.01 |
0.01 |
1000 |
0.01 |
0.00 |
0.00 |
The determined range was:
Range:x1 = 40 µm where Rx≥ 90 %
x2 = 250 µm where Rx≤ 10 %
Discussion: For dry sieve analysis the following sieves were used: 1000, 500, 250, 125, 100, 75, 50 and 40 µm. The determined range was between 40 µm for Rx ≥ 90% and 250 µm for Rx ≤ 10%. The retained material on the pan was 51.44 g (7.41%). Using the dry sieve method, it was found that ≥ 90% of all the particles of the test item was found on the 40 µm sieve and therefore are bigger than 40 µm and ≤ 10% of all the particles were found on the 250 µm sieve and therefore are bigger than 250 µm.
Volume based particle size distribution of FeNb Fines M45
Measurement | L10 D (v, 0.1) [µm] |
L50 D (v, 0.5) [µm] |
L90 D (v, 0.9) [µm] |
1 | 57.29 | 166.25 | 352.09 |
2 | 58.78 | 170.06 | 364.30 |
3 | 59.25 | 171.27 | 359.59 |
Mean Value | 58.44 | 169.20 | 358.66 |
Description of key information
<0.4 mm material (laser diffraction; CIPAC MT 187):
D10: 123.8 µm
D50: 346.5 µm
D90: 695.2 µm
MMAD: 991 µm
<2 mm material (sieve analysis; CIPAC MT 170):
The determined range was:
x1 = 75 µm where Rx ≥ 90% (D10)
x2 = 1000 µm where Rx ≤ 10%. (D90)
Rx: sum of residue
Fines M45 material (laser diffraction; CIPAC 187
D10: 58.44 µm
D50: 169.2 µm
D90: 358.66 µm
MMAD: 485 µm
Fines M45 material (sieve analysis; CIPAC MT 170)
The determined range was:
x1 = 40 µm where Rx ≥ 90%
x2 = 250 µm where Rx ≤ 10 %
Additional information
The substance is marketed or used in compact form and as granular/powder form. Granular/powder forms (< 0.4 mm and < 2 mm and 40 -150µm) were examined with laser diffraction (CIPAC MT 187) and sieve analysis (CIPAC MT 170).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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