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EC number: 201-346-7 | CAS number: 81-39-0
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:
- 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
- Deviations:
- no
- Principles of method if other than guideline:
- In consideration of the relevance of granulometry study on toxicological assessment, only the size distributions of the sieved fraction < 100 μm were studied in detail.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- counted distribution
- Mass median aerodynamic diameter:
- >= 100 µm
- Remarks on result:
- other: Standard deviation is not reported as 100% of all particles were >100 µm.
- Percentile:
- other: 100%
- Mean:
- >= 100 µm
- Remarks on result:
- other: Standard deviation is not reported as 100% of all particles were >100 µm.
- Conclusions:
- The sample material had no mass fraction <100 μm and agglomerates in a fibrous manner with a diameter of > 100 μm.
- Executive summary:
According to the OECD Guidelines for Testing of Chemicals No: 110 method B “Particle Size Distribution/Fibre Length and diameter Distributions” the sample was fractionated by a 100 µm sieve. There were no particles smaller than 100 µm which made further microscopic steps obsolete. The sample material had no mass fraction <100 μm and agglomerates in a fibrous manner with a diameter of > 100 μm.
Reference
Result: Sieve Fraction:
- weighted sample: 0.7815 g
- weight fraction <100 μm: 0.00 g
- mass fraction <100 μm: 0.00 %
The sample material has no mass fraction <100 μm and agglomerates in a fibrous manner with a diameter of > 100 μm.
Description of key information
Additional information
The sample was fractionated by a 100 µm sieve. There were no particles smaller than 100 µm which made further microscopic steps obsolete.
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