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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Physical & Chemical properties


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Administrative data

Link to relevant study record(s)

Description of key information

Viscosity is a property of fluids. Since calcium oxide is a solid at ambient temperature (ca. 20°C) such a study does not need to be conducted for this substance (melting point: >450°C) (in accordance with section 1, Annex XI of regulation (EC) 1907/2006 (REACH)). Calcium carbonate is also a solid which remains solid at temperatures significantly above room temperature (melting point >825 °C). OECD Guideline no. 114 on the viscosity of liquids, indicates that the substances to be tested must be liquid at room temperature, and therefore a study of the viscosity of calcium carbonate is not required.

Key value for chemical safety assessment

Additional information