Registration Dossier
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EC number: 213-030-6 | CAS number: 917-61-3
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- 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 for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 170 (1994)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- 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 %
- 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.
Reference
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.
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