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EC number: 429-080-9 | CAS number: -
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:
- December 1999 to Jan 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Justification for type of information:
- UUID SNIF-2a0dd96c-9a86-36a5-89ab-9aeb1328754b
Date 2010-08-27 03:35:46 BST
Remarks Successfully migrated to IUCLID 5.5 format.
upgraded to IUCLID 6 - Qualifier:
- according to guideline
- Guideline:
- other: : Sieving screen. Two replicates of approximately 64 g were used
- GLP compliance:
- yes
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- > 2 000 µm
- Distribution:
- 0.09 %
- No.:
- #2
- Size:
- 850 - 2 000 µm
- Distribution:
- 12.24 %
- No.:
- #3
- Size:
- 500 - 850 µm
- Distribution:
- 70.44 %
- No.:
- #4
- Size:
- 300 - 500 µm
- Distribution:
- 10.25 %
- No.:
- #5
- Size:
- 250 - 300 µm
- Distribution:
- 0.72 %
- No.:
- #6
- Size:
- 150 - 250 µm
- Distribution:
- 5.14 %
- No.:
- #7
- Size:
- 106 - 150 µm
- Distribution:
- 0.35 %
- No.:
- #8
- Size:
- < 106 µm
- Distribution:
- 0.77 %
- Conclusions:
- The particle size distribution was determined using by a sieve screening technique. A fraction of 0.77% w/w was recorded as passing a 106 micrometer screen.
Particle size distribution (from NCD section 3.0.00):
From sieving analysis, < 1% of the substance by mass passed through a 106 µm sieve. Less than 10% by mass passed through a 300 µm sieve, with almost 70% being trapped in the 500 - 850 µm range.
Reference
Particle Size Distribution:
From sieving analysis,approximate distribution is:
< 1% > 2000µm
12% 850-2000µm
70% 500-850µm
10% 300-500µm
<10% <300µm
<1% < 106µm
Mass Median Diameter: Not determined by this method
Description of key information
Analysis was conducted by sieve method therefore mean particle diameter could not be determined. However, the bulk of the sample analysed had a particle size of between 2000μm and 300μm (appromately 90%), although the inhalable fraction is considered to be negligible. Further investigation of the particle size below 100μm is not considered to be necessary. In fact, less than 1% of the particles (by mass) are smaller than 106 μm.
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
