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EC number: 204-611-5 | CAS number: 123-23-9
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:
- 2018-03
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 2591-1, Test sieving – Part 1: Methods using test sieves of woven wire cloth and perforated metal plate
- Version / remarks:
- December 1988
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 3310-1, Test sieves – Technical requirements and testing – Part 1: Test sieves of metal wire cloth
- Version / remarks:
- July 1990
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: SMA 721.02, Determination of the particle size distribution of powders and granular products
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: SMA 743.02, Distribution of powders and granulated products in representative portions
- Version / remarks:
- August 1993
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: DRAFT EUR 20268 EN - Guidance document on the determination of particle size distribution, fiber length and diameter distribution of chemical substances
- Version / remarks:
- 2002
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- Test performed in accordance with Internal Management System.
- Type of method:
- microscopic examination
- Remarks:
- light microscopic examination
- Type of particle tested:
- agglomerate
- Type of distribution:
- other: sieving method
- No.:
- #1
- Size:
- < 100 µm
- Distribution:
- 0 %
- No.:
- #2
- Size:
- > 100 µm
- Distribution:
- 100 %
- Conclusions:
- It was determined that the test item has no particles with size <100 µm. 100 % of the particles were with size >100 µm.
- Executive summary:
A study according to ISO 2591-1, ISO 3310-1, SMA 743.02 and Draft EUR 20268 EN was perfoemd to determined the particle size of the test item. The test item was tested in its initial form. Using light microscopic examination a picture of the test item was taken. The picture showed that particles smaller than 100 µm were present. Therefore, sieving was perfomed. Using a sieve with 100 µm size, the test item was sieved for 10 minutes at 1.00 mm amplitude. After the sieving it was determined that 100 % of the particles had a size above 100 µm. As <1%m/m particles passed the sieve, no particle size distribution (PSD) was perfomed. The light miscroscopic examination revealed that the shape of the test item is non-fibrous.
Reference
Light microscopic examinations
Pictures of the sample were taken with the Stemi 2000-c microscope assembled with an AxioCam ICc 3 digital camera. The picture showed that particles < 100 µm are present. Therefore, sieving was performed.
Sieving
It was determined that virtually no particles (< 1%m/m) passed the sieve. Consequentlly, no particle distribution distribution (PSD) was determined. The shape of the test item was determined to be non-fibrous.
Table 1. Sieve results 100 µm sieve
Fraction |
Amount |
|
[g] |
[%] |
|
< 100 µm |
0.00 |
0.00 |
> 100 µm |
96.79 |
100.0 |
Description of key information
It was determined that the test item has no particles with size <100 µm. 100 % of the particles were with size >100 µm.
Additional information
A study according to ISO 2591-1, ISO 3310-1, SMA 743.02 and Draft EUR 20268 EN was perfoemd to determined the particle size of the test item. The test item was tested in its initial form. Using light microscopic examination a picture of the test item was taken. The picture showed that particles smaller than 100 µm were present. Therefore, sieving was perfomed. Using a sieve with 100 µm size, the test item was sieved for 10 minutes at 1.00 mm amplitude. After the sieving it was determined that 100 % of the particles had a size above 100 µm. As <1%m/m particles passed the sieve, no particle size distribution (PSD) was perfomed. The light miscroscopic examination revealed that the shape of the test item is non-fibrous.
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