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Diss Factsheets
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EC number: 945-327-8 | 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the melting point is above 300°C
- Justification for type of information:
- Expert judgement based on observation, knowledge of the manufacturing method, and analytical data e.g. on the composition of CMS.
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Conclusions:
- In complience with the REACH regulation, data on vapour pressure was waived for both silicon dioxide (CAS 7631-86-9) and calcium silicate (CAS1344-95-2) as the melting point was > 300 °C (OECD SIDS, 2004). Measurements of melting point was performed on synthetic amorphous silicon dioxide, whereas for calcium silicate, a read-across from synthetic amorphous silicon dioxide was made. Taken together, measurment of vapour pressure for CMS powder does not need to be conducted as the melting point, as for synthetic amorphous silicon dioxide, is estimated to be above 300 °C.
- Executive summary:
In complience with the REACH regulation, measurement of vapour pressure for synthetic amorphous silicon dioxide (CAS 7631-86-9) does not need to be conducted as the melting point is above 300 °C (approximately 1700
°C). Due to sharing similar structural, physical and chemical properties to CMS, synthetic amorphous silica is considered appropriate for read-across purposes. A melting point above 1000 Celcius is also reported in the SDS of CMS powder. Taken together, measurments of vapour pressure for CMS powder do not need to be conducted as the melting point, as for synthetic amorphous silicon dioxide, is estiamted to be above 300 °C.
- Endpoint:
- vapour pressure
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the melting point is above 300°C
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Specific details on test material used for the study:
- In complience with the REACH regulation, data on vapour pressure was waived for both silicon dioxide (CAS 7631-86-9) and calcium silicate (CAS1344-95-2), melting point > 300 °C (OECD SIDS, 2004).
- Conclusions:
- In complience with the REACH regulation, data on vapour pressure was waived for both silicon dioxide (CAS 7631-86-9) and calcium silicate (CAS1344-95-2), melting point > 300 °C (OECD SIDS, 2004).
- Executive summary:
In accordance with the REACH regulation, data on vapour pressure was waived for both silicon dioxide (CAS 7631-86-9) and calcium silicate (CAS1344-95-2), melting point > 300 °C (OECD SIDS, 2004). Melting point was measured for silicon dioxide whereas for calcium silicate, an analogue read-approach from silicon dioxide was carried out.
- Endpoint:
- vapour pressure
- Type of information:
- other: Quartzene CMS - paste
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Principles of method if other than guideline:
- Vapour pressure not measured: not applicable.
- Type of method:
- other: See "Remarks"
- Remarks:
- Not applicable
- Key result
- Remarks on result:
- not measured/tested
- Remarks:
- Not applicable.
- Conclusions:
- Vapour pressure: not applicable for CMS paste.
Referenceopen allclose all
Description of key information
In compliance with the REACH regulation, measurement of vapour pressure for synthetic amorphous silicon dioxide (CAS 7631-86-9) does not need to be conducted as the melting point is above 300 °C (approximately 1700
°C). Due to sharing similar structural, physical and chemical properties to synthetic amorphous silica,
measurments of vapour pressure for CMS do not need to be conducted as the melting point, as for synthetic amorphous silicon dioxide, is assumed to be above 300 °C. The above statement is an expert judgement based on observation, knowledge of the manufacturing method, and analytical data e.g. on the composition of CMS.
A melting point above 1000 Celcius is also reported in the SDS of CMS powder. Measurements of vapour pressure for the paste form of CMS is not applicable.
Key value for chemical safety assessment
Additional information
Not applicable for inert and inorganic substance.
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.