3,3'-thiodi(propionic acid)

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

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

according to guideline

Guideline:

OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)

Deviations:

no

Principles of method if other than guideline:

The sample was fractionated by 100 μm sieve and tested by scanning electron microscopy (SEM: Philips XL 30 FEG). The fraction < 100 μm was gushed to carbon pads and sputtered with gold.

GLP compliance:

no

Type of method:

sieving

Remarks:

The sample was fractionated by 100 μm sieve and tested by scanning electron microscopy (SEM: Philips XL 30 FEG). The fraction < 100 μm was gushed to carbon pads and sputtered with gold.

Percentile:

D50

Mean:

51 µm

Remarks on result:

other: spherical volume

Percentile:

D50

Mean:

47 µm

Remarks on result:

other: Cubical Volume

Sieve Fraction:

weighted sample: 2.1387 g

weight fraction <100 μm: 0.1030 g

mass fraction <100 μm: 4.82%

Particle Size Distribution (Sieve Fraction < 100 μm)

Result: Mass Fraction (calculated)

Particle Size	Spherical Volume	Cubical Volume
< 4 μm	0.006%	0.007%
4-10 μm	0.63%	0.56%
10-100 μm	94.35%	96.84%
> 100 μm	5.01%	2.59%
Median (diameter)	51 μm	47 μm

Conclusion:

All particles with a mean diameter less than 100 μm have a mass fraction of 4.82%. 0.006% spherical and 0.007% cubical volume of this mass fraction has a mean diameter less than 4 μm.

Conclusions:

The particle size distribustion was determined according to OECD TG 110. Mass fraction is calculated for spherical and cubical volume in classes of particle diameters <4 μm, 4-10 μm, 10-100 μm and > 100 μm.
The D50 was determined to be 51 µm (spherical volume) and 47 µm (cubical volume), respectively.
All particles with a mean diameter less than 100 μm have a mass fraction of 4.82%. 0.006% spherical and 0.007% cubical volume of this mass fraction has a mean diameter less than 4 μm.

Description of key information

The particle size distribustion was determined according to OECD TG 110. Mass fraction is calculated for spherical and cubical volume in classes of particle diameters <4 μm, 4-10 μm, 10-100 μm and > 100 μm.

The D50 was determined to be 51 µm (spherical volume) and 47 µm (cubical volume), respectively. All particles with a mean diameter less than 100 μm have a mass fraction of 4.82%. 0.006% spherical and 0.007% cubical volume of this mass fraction has a mean diameter less than 4 μm.