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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Hydrolysis product: Read-across: Sodium oleate: Acutely toxic to aquatic invertebrates.
Hydrolysis product: HCl: Acutely very toxic to aquatic invertebrates.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
4.2 mg/L

Additional information

No data on the toxicity of stearoyl chloride is available. However, since the test substance rapidly hydrolyses in water invertebrates are mainly exposed to the hydrolysis product, stearic acid.

No reliable data are available on stearic acid.

There is one study available with sodium oleate (CAS 143 -19 -1) as test substance, which can be used for a read-across approach. The 24 -h EC50 was determined to be 4.2 mg/L (Huber, 1991, in HERA, 2003).

The hydrolysis product hydrochloric acid (HCl) was tested in a semi-static acute toxicity test according to OECD 202 with Daphnia magna. The 48-h EC50 was 0.492 mg/L (acid equivalent to pH 5.3; OECD 2002).