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Diss Factsheets
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EC number: 619-966-5 | CAS number: 825633-86-1
- 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
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:
- 2021-02-09 - 2021-02-12
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Version / remarks:
- 1981
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- GLP compliance:
- no
- Type of method:
- sieving
- Type of particle tested:
- agglomerate
- Type of distribution:
- volumetric distribution
- Key result
- Percentile:
- D10
- Mean:
- ca. 150 µm
- Remarks on result:
- other: St. dev. not determined
- Key result
- Percentile:
- D50
- Mean:
- ca. 500 µm
- Remarks on result:
- other: st. dev. not determined.
- Key result
- Percentile:
- D90
- Mean:
- > 4 000 µm
- Remarks on result:
- other: st. dev. not determined.
- Conclusions:
- The median particle size L50 of the test item deduced from the particle size distributions was 500 μm.
- Executive summary:
The determination of the particle size distribution by laser diffraction of the test item was performed according to the OECD Guideline 110 by laser diffraction. The median particle size L50 of the test item deduced from the particle size distributions was 500 μm.
Reference
Individual results (laser diffraction)
The test item consisted of irregularly formed crystalline particles. The test item was sieved with a mesh size of 1000 μm. 68.5 % (w/w) of the test item passed the sieve and only this fraction was measured with laser diffraction. Due to the relatively low number of particles which passed a 1000 μm sieve the particle size distribution via laser diffraction was evaluated to be insufficient and the results are not shown in this report. Therefore, a sieving measurement was performed additionally to determine the particle size distribution.
Individual results (sieving)
Due to the limited amount of substance available it was not possible to use a fresh sample for this additional experiment. The sample used for the sieving war already sieved over a 1000 μm sieve as preparation for the laser diffraction. After a sample was taken for the laser diffraction (laser diffraction as liquid dispersion only needs a small amount, e.g. one spatula of sample) both fractions were combined once again and this sample was used for the sieving analysis. 43.38 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 10 min with amplitude of 1.1 mm.
The particle size D50 estimated from this measurement was:
D50 = 500 μm
The particle size D10 estimated from this measurement was:
D10 = 150 μm
The particle size D90 estimated from this measurement was:
D90 > 4000 μm
As the sieving analysis showed a comparable fraction below 1000 μm (approximately 70 %) than the sieving before the laser diffraction the result from the sieving analysis was evaluated to be reliable and therefore, this result was used as final result.
Description of key information
The median particle size L50 of the test item deduced from the particle size distributions was 500 µm.
Additional information
The determination of the particle size distribution by laser diffraction of the test item was performed according to the OECD Guideline 110. The median particle size L50 of the test item deduced from the particle size distributions was 500 μm.
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