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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:
June 2017
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 - Method A: Particle Size Distribution (effective hydrodynamic radius)
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Key result
Percentile:
D10
Mean:
3.7 µm
St. dev.:
0.1
Key result
Percentile:
D50
Mean:
25.2 µm
St. dev.:
0.1
Key result
Percentile:
D90
Mean:
96.2 µm
St. dev.:
0.3

Two test series of 3 measurements each were performed with the test item.

   Test series 1  Test series 2

Average

 D10  3.6 µm  3.8 µm  3.7 µm
 D50  25.1 µm  25.3 µm  25.2 µm
 D90  95.9 µm  96.5 µm  96.2 µm
Conclusions:
The test item trans-cyclohexane-1,2-dinitrilotetraacetic acid monohydrate has a median particle size D50 = 25 µm, which was determined by laser diffraction measurement.

Description of key information

The test item trans-cyclohexane-1,2-dinitrilotetraacetic acid monohydrate has a median particle size D50 = 25 µm, which was determined by laser diffraction measurement.

Additional information