Naphthalene-1,5-diol

Particle size distribution (Granulometry)

Link to relevant study record(s)

Reference

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-01-12 to 2018-01-19

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)

Version / remarks:

1981

Deviations:

no

Qualifier:

according to guideline

Guideline:

ISO 13320 (Particle size analysis - Laser diffraction methods)

Version / remarks:

2009

Deviations:

no

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:

3 µm

Geometric standard deviation:

>= 0.01 - <= 0.1

Percentile:

D10

Mean:

0.8 µm

St. dev.:

0.03

Percentile:

D50

Mean:

3.1 µm

St. dev.:

0.04

Percentile:

D90

Mean:

7 µm

St. dev.:

0.1

Conclusions:

The fine fraction of the test item Naphthalene-1,5-diol has a median particle size of D50 = 3 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981) and ISO 13320 (2009).

Executive summary:

Two test series of 3 measurements each were performed with the test item. 

Test series 1:

D₁₀:      0.8 µm                                             Standard deviation: 0.01 µm

D₅₀:      3.1 µm           (Median diameter)     Standard deviation: 0.02 µm

D₉₀:      7.0 µm                                             Standard deviation: 0.08 µm

 

Test series 2:

D₁₀:      0.8 µm                                             Standard deviation: 0.02 µm

D₅₀:      3.1 µm           (Median diameter)     Standard deviation: 0.04 µm

D₉₀:      7.1 µm                                             Standard deviation: 0.10 µm

 

Average

D₁₀:      0.8 µm                                            Standard deviation: 0.03 µm

D₅₀:      3.1 µm           (Median diameter)     Standard deviation: 0.04 µm

D₉₀:      7.0 µm                                             Standard deviation: 0.10 µm

The fine fraction of the test item Naphthalene-1,5-diolhas a median particle size of D₅₀ = 3 µm, which was determined by laser diffraction measurementaccording to OECD Test Guideline 110 (1981) and ISO 13320 (2009).

Description of key information

The fine fraction of the test item Naphthalene-1,5-diol has a median particle size of D₅₀ = 3 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981) and ISO 13320 (2009).