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EC number: 426-840-1 | 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
- 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
- Version / remarks:
- 2 methods: multistage impactor and sieving
- Qualifier:
- according to guideline
- Guideline:
- other: Directives 87/18/EEC of 18 December 1986, 88/320/EEC of 7 June 1988 and 90/18/EEC of 18 December 1989
- Version / remarks:
- 2 methods: multistage impactor and sieving
- GLP compliance:
- yes
- Type of method:
- cascade impaction
- Remarks:
- and also sieving
- Size:
- < 63 µm
- Distribution:
- 82.94 %
- Remarks on result:
- other: sieving
- Size:
- >= 63 - < 100 µm
- Distribution:
- 10.68 %
- Remarks on result:
- other: sieving
- Size:
- >= 100 µm
- Distribution:
- 6.38 %
- Remarks on result:
- other: sieving
- Size:
- < 0.36 µm
- Distribution:
- 0.37 %
- Remarks on result:
- other: multistage impactor
- No.:
- #1
- Size:
- >= 0.36 - < 0.75 µm
- Distribution:
- 1.27 %
- Remarks on result:
- other: multistage impactor
- No.:
- #2
- Size:
- >= 0.75 - < 1.55 µm
- Distribution:
- 4.4 %
- Remarks on result:
- other: multistage impactor
- No.:
- #3
- Size:
- >= 1.55 - < 3.08 µm
- Distribution:
- 11.2 %
- Remarks on result:
- other: multistage impactor
- No.:
- #4
- Size:
- >= 3.08 - < 6.17 µm
- Distribution:
- 18.3 %
- Remarks on result:
- other: multistage impactor
- No.:
- #5
- Size:
- >= 6.17 - < 12 µm
- Distribution:
- 15.36 %
- Remarks on result:
- other: multistage impactor
- No.:
- #6
- Size:
- >= 12 - < 24.6 µm
- Distribution:
- 11.63 %
- Remarks on result:
- other: multistage impactor
- No.:
- #7
- Size:
- >= 24.6 - < 63 µm
- Distribution:
- 20.41 %
- Remarks on result:
- other: multistage impactor
- Conclusions:
- The particle size distribution has been determined to be 4 7. 0 % < 10 μm and 6.38 % > 100 μm (lower limit of determination 0.36 μm, upper limit 100 μm).
Particle density: 1. 734 g/cm3 . - Executive summary:
The determination of the particle size distribution using the applied methods was limited to the range 0.36* μm - < 63 μm (multistage impactor), 63 μm - < 100 μm, and≥100 μm (sieving).
* related to the real density of the substance
The substance SCARLET RN 1165 is a powder with a rate of 6.38 mass-% greater than 100 μm. The particle size distribution further has been determined to be 4 7. 0 % < 10 μm. 50 mass-% of the substance were smaller than 12 μm (MMD). The maximum of mass frequency was a about 2.5 μm.
The density of the testing material was determined with a Helium-density-measuring apparatus.
The multiple determination resulted in the value 1.734 ± 0.007 g/cm3.
Reference
The substance SCARLET RN 1165 is a powder with a rate of 6.38 mass-% greater than 100 μm. The particle size distribution further has been determined to be 4 7. 0 % < 10 μm. 50 mass-% of the substance were smaller than 12 μm (MMD). The maximum of mass frequency was a about 2.5 μm.
The density of the testing material was determined with a Helium-density-measuring apparatus.
The multiple determination resulted in the value 1.734 ± 0.007 g/cm3.
Sieving
| Range in µm | Mass-% |
| <63 | 82.94 |
| 63 -<100 | 10.68 |
| ≥100 | 6.38 |
Multistage impactor
| Stage | Range in µm | Mass-% |
| <0.36 | 0.37* | |
| 1 | 0.36 -<0.75 | 1.27 |
| 2 | 0.75 -<1.55 | 4.40 |
| 3 | 1.55 -<3.08 | 11.20 |
| 4 | 3.08 -<6.17 | 18.30 |
| 5 | 6.17 -<12.00 | 15.36 |
| 6 | 12.00 -<24.60 | 11.63 |
| 7 | 24.60 -<63 | 20.41 |
* precipitation on a separate filter
Description of key information
The substance SCARLET RN 1165 is a powder with a rate of 6.38 mass-% greater than 100 μm. The particle size distribution further has been determined to be 4 7. 0 % < 10 μm. 50 mass-% of the substance were smaller than 12 μm (MMD). The maximum of mass frequency was a about 2.5 μm.
The density of the testing material was determined with a Helium-density-measuringapparatus. The multiple determination resulted in the value 1.734 ± 0.007 g/cm3.
Additional information
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