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EC number: 201-202-3 | CAS number: 79-39-0
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:
- 2010-04-20
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- other: DIN EN ISO/IEC 17025
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Specific details on test material used for the study:
- Purity: 98.8 %
Batch no. 11191230 - Percentile:
- other: Mean
- Mean:
- 926.2 µm
- St. dev.:
- 469.6
- Percentile:
- D90
- Mean:
- 1 644 µm
- Remarks on result:
- other: St.dev. not given
- Percentile:
- D50
- Mean:
- 967 µm
- Remarks on result:
- other: St.dev. not given
- Percentile:
- D10
- Mean:
- 348 µm
- Remarks on result:
- other: St.dev. not given
- Percentile:
- other: D1.15
- Mean:
- ca. 47.94 µm
- Remarks on result:
- other: A proportion of 1.15 % of the particles have an average particle size of 47.94 µm
- Conclusions:
The particle size distribution (volume distribution) of methacrylamide was measured by laser diffraction with dry dispersing.
The dustiness of the substance is low.
However, as a significant proportion of particles (> 1 %) have a diameter below 50 µm, inhalation is considered as a relevant exposure pathway.- Executive summary:
The particle size distribution (volume distribution) of methacrylamide was measured by laser diffraction with dry dispersing.
The average of three measurements is: d90: 1644 µm; d50: 967 µm; d10: 348 µm;
A proportion of 1.15 % has a diameter of 47.94 µm (d1.15: 47.94 µm).
The dustiness of the substance is low.
However, as a significant proportion of particles (> 1 %) have a diameter below 50 µm, inhalation is considered as a relevant exposure pathway (cf ECHA Guidance R.14, page 110).
Reference
|
Particle size [µm] |
Proportion [%] |
1st measurement |
47.94 |
1.23 |
2nd measurement |
47.94 |
1.19 |
3rd measurement |
47.94 |
1.04 |
Average |
47.94 |
1.15 |
Description of key information
The average of three measurements is: d90: 1644 µm; d50: 967 µm; d10: 348 µm;
A proportion of 1.15 % has a diameter of 47.94 µm (d1.15: 47.94 µm).
The dustiness of the substance is low.
However, as a significant proportion of particles (> 1 %) have a diameter below 50 µm, inhalation is considered as a relevant exposure pathway (cf ECHA Guidance R.14, page 110).
Additional information
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