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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The calcium salts of monocarboxylic acids C14-C22 category are readily biodegradable at concentrations that may be expected in the influent of a sewage treatment plant, and thus the toxicity to aquatic micro-organisms studies have not been conducted.

Key value for chemical safety assessment

Additional information

The calcium salts of monocarboxylic acids C14-C22 category are readily biodegradable at concentrations that may be expected in the influent of a sewage treatment plant, and thus the toxicity to aquatic micro-organisms studies have not been conducted.

Calcium stearate has a toxicity to luminescent bacteria of EC50: 22120 mg/L and NOEC: 710 mg/L. The toxicity of calcium stearate to bacteria was determined in an unpublished proprietary study (TUV Bayern 1992) following guideline DIN 38412 T34. Only a summary of the study is available and there is very limited information on the test methods and conditions used so this study has only been used as supporting data for this endpoint.

Although data are only available in the category for calcium stearate, substances with other carbon chain lengths are expected not to be inhibitory to micro-organisms either. All of the substances in the category are considered to be readily biodegradable with no toxicity to fish, Daphnia or algae at up to 100 mg/L and the similarities in environmental fate and ecotoxicity properties across the category indicate that reading across the toxicity to aquatic micro-organisms is justified.