Registration Dossier
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EC number: 201-744-0 | CAS number: 87-41-2
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 4 Oct 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 66165 part 1 and 2: Sieving analysis
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 110: Particle Size Distribution
- GLP compliance:
- no
- Type of method:
- sieving
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Phthalide
- EC Number:
- 201-744-0
- EC Name:
- Phthalide
- Cas Number:
- 87-41-2
- Molecular formula:
- C8H6O2
- IUPAC Name:
- 1,3-dihydro-2-benzofuran-1-one
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Key result
- Percentile:
- D10
- Mean:
- 500 µm
- Remarks on result:
- other: SD is not indicated
- Key result
- Percentile:
- D50
- Mean:
- 3 700 µm
- Remarks on result:
- other: SD is not indicated
- Key result
- Percentile:
- D90
- Mean:
- 9 200 µm
- Remarks on result:
- other: SD is not indicated
Any other information on results incl. tables
The test item consisted of granules (several millimeter in diameter). Due to the size of the granules the particle size distribution was determined by dry sieving.
486.64 g of the test item were placed on the top sieve. After closing the sieve stack and placing it into the sieving machine sieving was performed for 2 min with amplitude of 1.0 mm.
Mesh size | Range of particle size | Fraction | Total | Fraction | Total |
µm | µm | g | g | % | % |
10000 | >10000 | 34.08 | 34.08 | 7.00 | 7.00 |
6300 | 6300-10000 | 71.06 | 105.14 | 14.60 | 21.61 |
4000 | 4000-6300 | 116.61 | 221.30 | 23.87 | 45.48 |
3150 | 3150-4000 | 57.00 | 278.30 | 11.71 | 57.19 |
2000 | 2000-3150 | 84.42 | 362.72 | 17.35 | 74.54 |
1000 | 1000- 2000 | 53.10 | 415.82 | 10.91 | 85.45 |
500 | 500-1000 | 17.01 | 432.83 | 3.50 | 88.94 |
250 | 250- 500 | 49.51 | 482.34 | 10.17 | 99.12 |
125 | 125 - 250 | 4.07 | 486.41 | 0.84 | 99.95 |
Receiver pan |
0-125 |
0.00 |
468.41 |
0.00 |
99.95 |
The particle sizes were estimated from Figure 1 (page 7). The particle size D50 estimated from this measurement was:
D50 = 3700 µm
The particle size D10 estimated from this measurement was:
D10 = 500 µm
The particle size D90 estimated from this measurement was:
D90 = 9200 µm
Applicant's summary and conclusion
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