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EC number: 202-268-6 | CAS number: 93-69-6
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Justification for type of information:
- Method considered suitable to determine rish of inhaltion
Substance is typically supplied wetted (in mixture) to avoid dust formation. - Qualifier:
- equivalent or similar to guideline
- Guideline:
- ISO 21501-2 (Determination of particle size distribution - Single particle light interaction methods - Part 2: Light scattering liquid-borne particle counter)
- Principles of method if other than guideline:
- Was carried out using a Malvern Mastersizer version 5.22
- GLP compliance:
- not specified
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Mass median aerodynamic diameter:
- > 10 µm
- Percentile:
- D50
- Mean:
- > 10 µm
- Remarks on result:
- other: Low inhalable fraction
- No.:
- #1
- Size:
- 1 µm
- Distribution:
- 1.52 %
- No.:
- #2
- Size:
- 4 µm
- Distribution:
- 12 %
- No.:
- #3
- Size:
- 10 µm
- Distribution:
- 29.18 %
- No.:
- #4
- Size:
- 32 µm
- Distribution:
- 65.36 %
- No.:
- #5
- Size:
- 60 µm
- Distribution:
- 86.45 %
- No.:
- #6
- Size:
- 75 µm
- Distribution:
- 91.8 %
- No.:
- #7
- Size:
- 110 µm
- Distribution:
- 96.83 %
- No.:
- #8
- Size:
- 145 µm
- Distribution:
- 97.97 %
- No.:
- #9
- Size:
- 160 µm
- Distribution:
- 98.01 %
- Conclusions:
- Although there is significant proportion of material < 10 um, only a small proportion was under 1 um
It is considered to be medium dustiness for the CSR purposes.
Reference
Description of key information
The particle size distribution at 1 µm was 1.52 %
Although there is significant proportion of material < 10 um, only a small proportion was under 1 um
It is considered to be medium dustiness for the CSR purposes.
Additional information
| No. | Size | Distribution | Remarks |
|---|---|---|---|
| #1 | 1 µm | 1.52 % | |
| #2 | 4 µm | 12 % | |
| #3 | 10 µm | 29.18 % | |
| #4 | 32 µm | 65.36 % | |
| #5 | 60 µm | 86.45 % | |
| #6 | 75 µm | 91.8 % | |
| #7 | 110 µm | 96.83 % | |
| #8 | 145 µm | 97.97 % | |
| #9 | 160 µm | 98.01 % |
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