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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
Study period:
2010
Reliability:
1 (reliable without restriction)
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
microscopic examination
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
72.91 µm
St. dev.:
42.7
No.:
#1
Size:
>= 5 - <= 100 µm
Distribution:
70.82 %
No.:
#2
Size:
> 100 µm
Distribution:
29.18 %

Result: Sieve Fraction

2 -Ethyl-2 -(hydroxylmethyl)-1,3 -propanediol

weighed sample: 5.6678 g

weight fraction < 100 micrometer: 0.03758 g

mass fraction < 100 micrometer: 0.66 %

Statistical data:

Counts

1096

 

Mean Diameter [micrometer]

Aspect Ratio

Minimum

5.48

1.04

Maximum

351.70

16.73

Arithmetic mean

75.66

1.80

Median

72.91

1.56

Standard deviation

42.74

1.08

Particles with diameter greater than 100 micrometer are due to their aspect ratios up to 1.22.

Result: Mass Fraction (calculated):

2 -Ethyl-2 -(hydroxylmethyl)-1,3 -propanediol

Sieve fraction < 100 micrometer

Statistical data:

Particle Size

Spherical Volume

Cubical Volume

< 4 micrometer

0 %

0 %

4 – 10 micrometer

0 %

0 %

10 – 100 micrometer

21.87 %

28.44 %

> 100 micrometer

78.13 %

71.55 %

Median (diameter)

125 micrometer

116 micrometer

Conclusions:
The mean particle diameter of TMP is 75.66 micrometer.
Executive summary:

The mean particle diameter of TMP (TMP < 100 micrometer sieve fraction) is 75.66 micrometer as determined experimentally according to OECD GUIDELINE FOR TESTING OF CHEMICALS, method B (Karbach, 2010). Regarding the TMP fraction < 100 micrometer, 70.82 % possess a mean diameter of 5 -100 micrometer, no particles, that means 0 % were detected possessing a mean diameter from < 0.4 - 5 micrometer.

29.18 % possess a mean diameter of > 100 micrometer.

Description of key information

The mean particle diameter of TMP (TMP < 100 micrometer sieve fraction) is

75.66 micrometer as determined experimentally according to OECD GUIDELINE FOR TESTING OF CHEMICALS, method B (Karbach, 2010). Regarding the TMP fraction < 100 micrometer, 70.82 % possess a mean diameter of 5 -100 micrometer and 0 particles, that means 0 % were detected possessing a mean diameter from < 0.4 - 5 micrometer. 29.18 % possess a mean diameter of > 100 micrometer.

Additional information