Registration Dossier

Physical & Chemical properties

Particle size distribution (Granulometry)

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2009-02-24 to 2009-05-13
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to other study
Qualifier:
according to
Guideline:
other: CIPAC MT 170 (1994)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
sieving
Type of distribution:
other: mass distribution
Key result
Percentile:
other: D80
Mean:
> 125 - < 500 µm
Remarks on result:
other: The range of 80% particle size could not be determined exactly, as even the sieve with the largest mesh size showed a residue > 10%
No.:
#1
Size:
> 10 µm
Distribution:
100 %
No.:
#2
Size:
> 25 µm
Distribution:
99.4 %
No.:
#3
Size:
> 50 µm
Distribution:
98.3 %
No.:
#4
Size:
> 75 µm
Distribution:
97.2 %
No.:
#5
Size:
> 125 µm
Distribution:
84.3 %
No.:
#6
Size:
> 250 µm
Distribution:
63.5 %
No.:
#7
Size:
> 500 µm
Distribution:
14.6 %

Following the dry sieve analysis of the test item sodium cyanate, a range of approx. 500 to 125 µm covers 80 % of the particle size distribution. The range of 80% particle size could not be determined exactly, as even the sieve with the largest mesh size showed a residue > 10%. For the assessment of the test item’s hazard properties, this is considered as not critical.

No particles with a diameter below 10 µm were found.

No observations were made which have cause doubts concerning the validity of the study outcome.

Conclusions:
A range of approx. 500 to 125 µm covers 80 % of the particle size distribution
Executive summary:

Following the dry sieve analysis of the test item sodium cyanate, a range of approx. 500 to 125 µm covers 80 % of the particle size distribution. The range of 80% particle size could not be determined exactly, as even the sieve with the largest mesh size showed a residue > 10%. For the assessment of the test item’s hazard properties, this is considered as not critical.

No particles with a diameter below 10 µm were found.

No observations were made which have cause doubts concerning the validity of the study outcome.

Description of key information

A range of 500 to 125 µm covers 80 % of the particle size distribution. No particles with a diameter below 10 µm were found.

Additional information

Following the dry sieve analysis of the test item sodium cyanate, a range of approx. 500 to 125 µm covers 80 % of the particle size distribution. The range of 80% particle size could not be determined exactly, as even the sieve with the largest mesh size showed a residue > 10%. For the assessment of the test item’s hazard properties, this is considered as not critical. No particles with a diameter below 10 µm were found. No observations were made which have cause doubts concerning the validity of the study outcome.