Registration Dossier
Registration Dossier
Diss Factsheets
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EC number: 952-026-5 | 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

Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative self-ignition temperature (solids)
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
A study for auto-flammability is not required as Synthetic Wollastonite shows no self-heating to 400 °C, based on inert inherent properties.
Furthermore, experience of manufacture and use shows no evidence of self-heating. A study carried out on the analogue substance Kieselghur soda ash flux calcined showed no evidence of self-heating. Justification for read-across is warranted given the similarities in toxicity profile and physico-chemical properties for Soda-ash flux calcined kieselghur and synthetic wollastonite. - Reason / purpose for cross-reference:
- data waiving: supporting information
- Endpoint:
- auto-flammability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- Testing was conducted between 15 March 2010 and 23 March 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: Method N.4 of the UN Transport of Dangerous Goods, Manual of Tests and Criteria, fourth revised edition, 2003
- GLP compliance:
- yes (incl. QA statement)
- Conclusions:
- A negative result was obtained. Therefore the material is not classified in Division 4.2
Referenceopen allclose all
There were no signs of self-ignition or self heating over the duration of the test.
Description of key information
A study for auto-flammability is not required as Synthetic Wollastonite shows no self-heating to 400 °C, based on inert inherent properties.
Furthermore, experience of manufacture and use shows no evidence of self-heating. A study carried out on the analogue substance Kieselghur soda ash flux calcined showed no evidence of self-heating, based on this it can be concluded that Synthetic Wollastonite should be considered to be not classified for auto-flammability.
Key value for chemical safety assessment
Additional information
In accordance with column 2 of REACH Annex VII, testing (required in section 7.12) is not needed because the test item shows no self-heating to 400 °C, based on inert inherent properties. Furthermore a study carried out on the analogue substance Kieselghur soda ash flux calcined, was negative for auto-flammability.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.

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