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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well documented report of guideline study conducted according to GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
GLP compliance:
yes (incl. certificate)
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): ATBS
- Physical state: white powder
- Analytical purity: 99.4%
- Lot/batch No.: 061202 received 18 january 2007
- Expiration date of the lot/batch: 30 june 2007
- Storage condition of test material: Room temperature in the dark

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
> 30 - < 400 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
other: 3.2 %
Mean:
> 400 µm
Percentile:
other: 37.7%
Mean:
> 125 - < 400 µm
Percentile:
other: 35.5%
Mean:
> 75 - < 125 µm
Percentile:
other: 22.2%
Mean:
> 30 - < 75 µm
Percentile:
other: 1.3%
Mean:
> 10 - < 30 µm

Any other information on results incl. tables

Result of the miscroscopic analysis

Size µm         Mean%

105 - 130       14.6%

60.0 - 105       45.1

30.0 - 60.0       33.6

10.0 -30.0        6.5

0.5 -10.0          0.2

The observed material was a mixture of long and thin particles, with some more irregular crystalline particles.

Applicant's summary and conclusion

Conclusions:
The results indicated that 0.2% w/w of ATBS was smaller than 10 µm.