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EC number: 948-256-0 | CAS number: -
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2019
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: internal guideline : laser granulometry (GEMO PPH-300-00)
- Principles of method if other than guideline:
- Laser diffusion granulometry is an indirect measurement technique commonly used to determine the size distribution of granular powder materials. The principle of the method is as follows: the optical unit of the granulometer records the image of the diffusion (diffraction, reflection, refraction) of a monochromatic radiation by a suspension of particles, diffusion images are calculated from a diffusion model, according to theoretical particle size distributions, the calculated images and the measured image are adjusted by the least squares method.
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Resinoid of Boswellia serrata (Burseraceae) obtained from exudate by hexane extraction
- EC Number:
- 948-256-0
- IUPAC Name:
- Resinoid of Boswellia serrata (Burseraceae) obtained from exudate by hexane extraction
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Key result
- Percentile:
- D10
- Mean:
- ca. 12.1 µm
- St. dev.:
- 2.21
- Key result
- Percentile:
- D25
- Mean:
- ca. 31.32 µm
- St. dev.:
- 4.99
- Key result
- Percentile:
- D50
- Mean:
- ca. 61.06 µm
- St. dev.:
- 7.26
- Key result
- Percentile:
- D75
- Mean:
- ca. 98.48 µm
- St. dev.:
- 9.52
- Key result
- Percentile:
- D90
- Mean:
- ca. 142.8 µm
- St. dev.:
- 11.99
Applicant's summary and conclusion
- Executive summary:
the particle size distribution was assessed according to an internal guideline : laser granulometry (GEMO PPH-300-00).
the results were the following:
median Mean diameter (μm) d10 (μm) d25 (μm) d50 (μm) d75 (μm) d90 (μm) 1 78,42 14,56 36,46 68,31 107,8 153,6 2 71,58 11,49 30,99 61,07 98,87 144,9 3 63,75 10,26 26,5 53,8 88,77 129,9 Mean
71,25
12,1
31,32
61,06
98,48
142,8
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