Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Description of key information

Key value for chemical safety assessment

Repeated dose toxicity: via oral route - systemic effects

Endpoint conclusion
Dose descriptor:
1 000 mg/kg bw/day
Study duration:

Repeated dose toxicity: inhalation - systemic effects

Endpoint conclusion
Dose descriptor:
2.5 mg/m³
Study duration:

Additional information

Neither Ca(OH)2 nor Al(OH)3 both are the main constituents of CAHC are known as sensitisingsubstances. Long term studies for Ca(OH)2 and Al(OH)3 doesn´t show any sensitising properties. See additional Read-Across-Study for Al(OH)3 and Lit: Recommendation from the Scientific Committee on Occupational Exposure Limits for Calcium oxide (CaO) and calcium hydroxide (Ca(OH)2) and Draft human and environmental risk assessment of calcium hydroxide prepared by the Washington State Department of Ecology, March 2005

Justification for classification or non-classification