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EC number: 264-938-4 | CAS number: 64539-51-1
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:
- 16 January 2018 - 26 March 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: European Commission Technical Guidance Document EUR 20268 Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances (2002).
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- cascade impaction
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Specific details on test material used for the study:
- Identification: RM10000077
Chemical name: Zinc oxide phosphite (CAS 64539-51-1)
Appearance/Physical state: white powder
Lot No: 1013Q17761
Purity: 62% (zinc content)
Expiry date: 25 June 2018
Storage conditions: room temperature, in the dark - Mass median aerodynamic diameter:
- <= 100 µm
- Key result
- Percentile:
- other: 98.8
- Mean:
- <= 100 µm
- Remarks on result:
- other: Mean and St.dev not specified
- No.:
- #1
- Size:
- <= 100 µm
- Distribution:
- ca. 98.8 %
- Conclusions:
- The percentage of test item with an inhalable particle size <100 μm was 98.8% of cumulative mass.
- Executive summary:
Particle size data was acquired, using a procedure designed to be compatible with the European Commission Technical Guidance Document EUR 20268 Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances (2002). The results are as follows:
Measurement Method Result Percentage of test item with an inhalable particle size <100 μm Sieve 98.8% Percentage of test item with a thoracic particle size <10.0 μm Cascade Impactor < 0.1% Percentage of test item with a respirable particle size <5.5 μm Cascade Impactor < 0.1%
Reference
| Measurement | Method | Result |
| Percentage of test item with an inhalable particle size <100 μm | Sieve | 98.8% |
| Percentage of test item with a thoracic particle size <10.0 μm | Cascade Impactor | < 0.1% |
| Percentage of test item with a respirable particle size <5.5 μm | Cascade Impactor | < 0.1% |
Description of key information
The percentage of test item with an inhalable particle size <100 μm was 98.8% of cumulative mass.
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