Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 945-327-8 | CAS number: -
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is a solid which melts 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 synthetic amorphous calcium magnesium silicate (CMS).
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Reason / purpose for cross-reference:
- data waiving: supporting information
- Key result
- Remarks on result:
- not measured/tested
- Remarks:
- Data waiving in accordance with the REACH regulation as the melting point for silicon dioxide is > 300 °C (OECD SIDS, 2004).
- Conclusions:
- Measurments of boiling point for CMS do not need to be conducted as the melting point, as for synthetic amorphous silicon dioxide, is estimated to be above 300 °C. A melting point > 1000 °C is also reported in the SDS of Quartzene CMS (powder). For the paste form of Quartzene CMS, no data on boiling point exist.
- Executive summary:
In complience with the REACH regulation, measurement of boiling point 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. Taken together, measurments of boiling point for CMS powder do not need to be conducted as the melting point, as for synthetic amorphous silicon dioxide, is estimated to be above 300 °C. A melting point > 1000 °C is also reported in the SDS of Quartzene CMS (powder). For the paste form of CMS, no data on boiling point exist.
- Endpoint:
- boiling point
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is a solid which melts above 300°C
- Reason / purpose for cross-reference:
- data waiving: supporting information
- 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 boiling point was waived for both silicon dioxide (CAS 7631-86-9) and calcium silicate (CAS1344-95-2) due to melting point > 300 °C (OECD SIDS, 2004).
- Conclusions:
- In complience with the REACH regulation, data on boiling point was waived for both silicon dioxide (CAS 7631-86-9) and calcium silicate (CAS1344-95-2), melting point > 300 °C (OECD SIDS, 2004).
Referenceopen allclose all
Description of key information
In compliance with the REACH regulation, measurement of boiling point 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. Taken together, measurments of boiling point for CMS powder do not need to be conducted as the melting point, as for synthetic amorphous silicon dioxide, is estimated to be above 300 °C. A melting point > 1000 °C is also reported in the SDS of CMS (powder). For the paste form of CMS, no data on boiling point exist.
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.
