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Diss Factsheets
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EC number: 945-942-1 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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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:
- 07 December 2017 to 04 January 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: IPAC MT 187 “Particle Size Analysis by Laser Diffraction”
- Version / remarks:
- Handbook K, 2007.
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- 45.396 µm
- Geometric standard deviation:
- 0.007
- Key result
- Percentile:
- D10
- Mean:
- 3.27 µm
- St. dev.:
- 0.025
- Key result
- Percentile:
- D50
- Mean:
- 17.486 µm
- St. dev.:
- 0.213
- Key result
- Percentile:
- D90
- Mean:
- 47.431 µm
- St. dev.:
- 1.059
- Conclusions:
- Under the conditions of the study, the test material was determined to have d10, d50 and d90 values of 3.270, 17.486 and 48.313 μm, respectively. 30.79 % of the sample had a volume < 10.00 µm.
- Executive summary:
The particle size distribution of the test material was determined in accordance with the standardised guidelines ISO 13320:2009 and CIPAC MT 187 under GLP conditions using particle size apparatus based on laser diffraction.
Under the conditions of the study, the test material was determined to have d10, d50 and d90 values of 3.270, 17.486 and 48.313 μm, respectively. 30.79 % of the sample had a volume < 10.00 µm.
Reference
- During the method development phase of the analysis trials were conducted using the small volume (wet) module (SVM) only. The SVM trials were conducted using water as the dispersant. The results of these trials indicated that the most appropriate test and material parameters to obtain the optimum measurements were.
Module: SVM
Dispersant: Water
Dispersion speed: 1500 rpm
Refractive index (sample): 0.000 n
Absorption: 0 AU
Analysis Model: General Purpose (Normal)
- Using the identified parameters, the particle size was analysed over the range 0.02 μm to 2000 μm. The results of the formal analysis are presented in Table 1.
- 30.79 % by volume of sample was seen to be < 10.00 μm.
- Coefficient of variation for d50 is less than 3 %; d10 and d90 are less than 5 %. Thus repeatability of the characteristic particles in the size distribution are within the acceptable limits as per the ISO 13320-1 test standard.
Table 1: Full Test Results
|
Run 1 |
Run 2 |
Run 3 |
Run 4 |
Run 5 |
Average ** |
Volume weighted mean |
23.243 |
23.401 |
23.227 |
22.013 |
22.473 |
22.872 |
Median |
17.671 |
17.724 |
17.570 |
17.272 |
17.199 |
17.486 |
Mode |
23.629 |
23.574 |
23.580 |
23.636 |
23.281 |
23.539 |
MMAD |
45.877 |
46.015 |
45.615 |
44.839 |
44.652 |
45.396 |
d10- 10 % of material is < |
3.290 |
3.300 |
3.279 |
3.245 |
3.237 |
3.270 |
d50- 50 % of material is < |
17.671 |
17.724 |
17.570 |
17.272 |
17.199 |
17.486 |
d90- 90 % of material is < |
49.171 |
49.603 |
48.673 |
46.795 |
47.431 |
48.313 |
All results are in μm
* Mass median aerodynamic diameter
** Average result is calculated from the entirety of data captured in each run and is not a simple arithmetic mean.
Table 2: Standard Deviation Results
|
Run 1 |
Run 2 |
Run 3 |
Run 4 |
Run 5 |
STDVP |
% STDVP |
d10 - 10 % of material is < |
3.290 |
3.300 |
3.279 |
3.245 |
3.237 |
0.025 |
0.8 |
d50 - 50 % of material is < |
17.671 |
17.724 |
17.570 |
17.272 |
17.199 |
0.213 |
1.2 |
d90 - 90 % of material is < |
49.171 |
49.603 |
48.673 |
46.795 |
47.431 |
1.059 |
2.2 |
d15.78 - 15.78 % of material is < |
4.922 |
4.931 |
4.888 |
4.825 |
4.808 |
0.050 |
1.0 |
GSD |
3.590 |
3.594 |
3.595 |
3.580 |
3.577 |
0.007 |
0.2 |
MMAD |
45.877 |
46.015 |
45.615 |
44.839 |
44.652 |
0.552 |
1.2 |
GSD = Geometric standard deviation of the lognormal particle size distribution (calculated from d50/d15.78)
STDVP = standard deviation of the population
% STDVP = percentage standard deviation of the population
Description of key information
Under the conditions of the study, the test material was determined to have d10, d50 and d90 values of 3.270, 17.486 and 48.313 μm, respectively. 30.79 % of the sample had a volume < 10.00 µm.
Additional information
The particle size distribution of the test material was determined in accordance with the standardised guidelines ISO 13320:2009 and CIPAC MT 187 under GLP conditions using particle size apparatus based on laser diffraction. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
Under the conditions of the study, the test material was determined to have d10, d50 and d90 values of 3.270, 17.486 and 48.313 μm, respectively. 30.79 % of the sample had a volume < 10.00 µm.
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