Registration Dossier

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: CIPAC Handbook Volume F, MT 59.1
GLP compliance:
yes (incl. certificate)
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Test item: 1,1-Cyclohexane diacetic acid
CAS: 4355-11-7
Appearance: white, crystalline powder
Molecular weight: 200.23g/mol
Storage at test facility: Room temperature, protected from moisture and light.

Results and discussion

Particle size
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Particle size distribution at different passagesopen allclose all

Any other information on results incl. tables

The particle size distribution without and with the fine dust particle size fraction is given in the table below.

Particle size

fraction [um]

Mass fraction

with fine dust [%]

Mass fraction

without fine dust [%]*

 < 32

 0.87

 0.00

 32 - 45

 9.17

 9.25

 45 - 63

 22.71

 22.91

 63 - 75

 25.67

 25.90

 75 - 90

 19.53

 19.70

 90 - 125

 8.15

 8.22

 125 - 250

 12.26

 12.37

 > 250

 1.63

 1.65

* = removed in the preliminary test (0.86%)

Applicant's summary and conclusion

Conclusions:
The amount of fine dust (particle size fraction < 32um) removed by preliminary sieving with the 32um sieve was determined to be 0.87% of the applied mass.