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Particle size distribution (Granulometry)

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Reference
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:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to
Guideline:
other: image analysis based on BS3406, Part 4, 1993
GLP compliance:
yes (incl. certificate)
Type of method:
sieving
Type of distribution:
volumetric distribution
Test material information:
Composition 1
Key result
Percentile:
other: 0.3% was below 10 µm
Mean:
>= 0.1 - <= 0.4 other: %
St. dev.:
0.121
Remarks on result:
other: for details see Table 1 in Any other information on results

Table 1: Results of Image Analysis

Particle size

% Mass

(µm)

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Mean

Stdev

>125 (sieved)

69.8

67.5

67.0

66.0

68.0

66.3

67.4

1.375

105-130

6.6

7.0

3.3

5.0

6.6

7.8

6.1

1.627

60.0-105

15.4

13.3

14.6

12.5

13.7

12.0

13.6

1.273

30.0-60.0

6.0

9.5

9.8

11.4

7.7

9.7

9.0

1.888

10.4-30.0

2.0

2.5

4.9

4.7

3.8

3.8

3.6

1.162

0.5-10.4

0.1

0.2

0.4

0.4

0.2

0.3

0.3

0.121

 

 

 

 

 

 

 

 

 

 

The observed particles were irregular and crystalline in nature.

 

The results indicated that 0.3% w/w of the test material was smaller than 10 µm.

 

Description of key information

0.3% w/w of the test material is < 10 µm (OECD 110)

Additional information