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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:
14 April 2014 to 02 September 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
Name: FAT 20003/K TE
Batch number: AT-0026132600
Appearance/colour: Solid / brown
Chemical name: Sodium 6-amino-5-[[2-[(cyclohexylmethylamino)sulphonyl]phenyl]azo]-4-hydroxynaphthalene-2- sulphonate
CAS: 32846-21-2
Content of active ingredient : > 90% w/w.
Molecular weight: 517.60 g/mol (base), 540.59 g/mol (salt)
Dale of analysis: 07 Jan 2014
Expiry date: 20 Dec 2018
Storage conditions: Ambient (+5 to +30 °C}, dark, dry
Mass median aerodynamic diameter:
ca. 4.14 µm
Remarks on result:
not measured/tested
Percentile:
D10
Mean:
1.35 µm
Remarks on result:
other: Standard deviation is not specified
Key result
Percentile:
D50
Mean:
4.14 µm
Remarks on result:
other: Standard deviation is not specified
Percentile:
D90
Mean:
8.4 µm
Remarks on result:
other: Standard deviation is not specified
Conclusions:
Particle size distribution of FAT20003/K TE was determined according to CIPAC MT 187. L10D: 1.35 µm. L50D: 4.14 µm, L90D: 8.40 µm.
Executive summary:

For the determination of the particle size distribution a Malvern Mastersizer 2000 was used. The test was conducted according to CIPAC MT 187. An appropriate amount of the particles of the test item were introduced to the analyser beam (Helium-Neon Laser) by direct spraying through the measurement area using the dry powder feeder. By altering the air pressure and feeding rate the optimum measuring conditions were found. The dispersing energy was chosen in a way that the particle size distribution was nearly constant with increasing energy. Particle size distribution of FAT20003/K TE was as follows;

L10D: 1.35 µm.

L50D: 4.14 µm.

L90D: 8.40 µm.

Description of key information

For the determination of the particle size distribution a Malvern Mastersizer 2000 was used. The test was conducted according to CIPAC MT 187.An appropriate amount of the particles of the test item were introduced to the analyser beam (Helium-Neon Laser) by direct spraying through the measurement area using the dry powder feeder. By altering the air pressure and feeding rate the optimum measuring conditions were found. The dispersing energy was chosen in a way that the particle size distribution was nearly constant with increasing energy.Particle size distribution of FAT20003/K TE was as follows;

L10D: 1.35 µm.

L50D: 4.14 µm.

L90D: 8.40 µm.

Additional information