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Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From May 5th to May 6th, 2016.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ISO 13320-1
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
Key result
Percentile:
D10
Mean:
47.87 µm
St. dev.:
0.195
Key result
Percentile:
D50
Mean:
118.7 µm
St. dev.:
0.195
Key result
Percentile:
D90
Mean:
229.1 µm
St. dev.:
0.195
Key result
Percentile:
other: Mean (D4,3)
Mean:
130.96 µm
St. dev.:
0.195
No.:
#1
Size:
< 2 µm
Distribution:
1.38 %
No.:
#2
Size:
< 50 µm
Distribution:
10.84 %
No.:
#3
Size:
< 200 µm
Distribution:
83.8 %

Table no. 4. Results of particle size distribution

Size

Test number and fraction size [%]

1

2

3

4

5

Average

less than2 µm

1.43

1.41

1.37

1.36

1.33

1.38

less than 50µm

11.2

10.9

10.8

10.7

10.6

10.84

less than 200 µm

83.8

83.9

83.8

83.8

83.7

83.80

[µm]

d10

46.94

47.70

48.08

48.24

48.40

47.87

d50

118.3

118.6

118.9

118.8

118.9

118.7

d90

229.2

228.7

229.3

229.0

229.3

229.1

*d4,3, [µm]

130.9

130.9

131.2

130.7

131.1

130.96

Average d43,[µm]

130.96

Standard deviation,[µm]

0.195

Relative Standard Deviation,[%]

0.149

*Average d43, [µm] – The mass moment mean (De Brouckere Mean Diameter)

 

Conclusions:
The average particle size of the test item is 130.96 µm, the mass median diameter is 118.7 µm.
Executive summary:

The particle size distribution for the test substance was determined according to OECD 110 / CIPAC MT 187 - Particle size analysis by laser diffraction (ISO 13320 -1). The average particle size results for the test item are: D10 = 47.87 µm, D50 = 118.7 µm, D90 = 229.1 µm, D4,3 = 130.96 µm. The average particle size of the test item is 130.96 µm, the mass median diameter is 118.7 µm.

Description of key information

Key study. Test method according to OECD 110 / CIPAC MT 187 - Particle size analysis by laser diffraction (ISO 13320 -1), GLP study. The average particle size of the test item is 130.96 µm, the mass median diameter is 118.7 µm.

Additional information