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Diss Factsheets
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EC number: 481-870-2 | 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
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 28 March 2007 to 24 April 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do no effect the quality of the relevant results.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of distribution:
- volumetric distribution
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Mean:
- other: Too few particles were of a size less than 10.0 µm to allow accurate assessment of mass median aerodynamic diameter.
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- other: Not applicable
Particle size distribution at different passagesopen allclose all
- No.:
- #1
- Size:
- < 100 µm
- Distribution:
- 74 %
- No.:
- #2
- Size:
- < 10 µm
- Distribution:
- 2.1 %
- No.:
- #3
- Size:
- < 5.5 µm
- Distribution:
- 0.327 %
Any other information on results incl. tables
Too few particles were of a size less than 10.0 µm to allow accurate assessment of mass median aerodynamic diameter.ative sampling was ensured by rolling the sample container for approximately 10 minutes and sampling from the top, middle and bottom prior to definitive testing.
The inhalable fraction is defined as the mass fraction of particles which can be inhaled by nose or mouth, the thoracic fraction is defined as the mass fraction of particles that passes the larynx and the respirable fraction is defined as the mass fraction of particles that reaches the alveoli.
Measurement |
Method |
Result |
Proportion of test material having an inhalable particle size less than 100 µm |
Sieve |
74.0% |
Proportion of test material having a thoracic particle size less than 10.0 µm |
Cascade Impactor |
2.10% |
Proportion of test material having a respirable particle size less than 5.5 µm |
Cascade Impactor |
0.327% |
Applicant's summary and conclusion
- Conclusions:
- Too few particles were of a size less than 10.0 µm to allow accurate assessment of mass median aerodynamic diameter.
- Executive summary:
The method used to evaluate particle size disrtibution is designed to comply with that given in ‘Particle Size Distribution, Fibre Length and Diameter Distribution’, June 1996 European Commission technical guidance document, which satisfies the requirements of OECD Guideline 110.
Test material (approximately 3g) was passed into the inlet port of a Marple Miller Cascade Impactor (MSP Corporation). The cascade impactor operates at a flow rate of 60 litres/minute and make-up atmospheric air was allowed to enter the impactor around the inlet port. The impactor consists of five stages with cut-point aerodynamic diameters of 10.0, 5.5, 2.4, 1.61 and 0.307 µm, and a final glass fibre filter. Particles not deposited in the artificial throat are deposited, according to size, onto the bottom of the collection cups. The collection cups, artificial throat, and final filter were weighed before and after the run and the weight of test material collected at each stage calculated by difference.
Particle size data acquired for the test material are shown in the following table:
Measurement
Method
Result
Proportion of test material having an inhalable particle size less than 100 µm
Sieve
74.0%
Proportion of test material having a thoracic particle size less than 10.0 µm
Cascade Impactor
2.10%
Proportion of test material having a respirable particle size less than 5.5 µm
Cascade Impactor
0.327%
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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