Registration Dossier
Registration Dossier
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EC number: 200-865-6 | CAS number: 75-36-5
Endpoint summary
Administrative data
Description of key information
Additional information
Acute toxicity in fish: experimental data from a publication: the test substance is acetyl chloried and the method is similar to OECD guideline 203. The 96-h LC50 for Pimephales promelas is 42 mg/l.
Acute toxicity to aquatic invertebrates: Acetyl chloride hydrolyses very fast to acetic acid and hydrochloric acid. Data on acetic acid and hydrochloric acid is provided.
Acetic acid: The 48 -h EC50 with Daphnia magna is 65 mg/l (OECD 202).
Hydrochloric acid: The 48 h EC50 of pH 5.3 is 0.492 mg/l (OECD 202).
Acute toxicity to algae: Acetyl chloride hydrolyses very fast to acetic acid & hydrochloric acid. Data on acetic acid and hydrochloric acid is provided.
Acetic acid: 96-h EC50 for Navicula seminulum based on growth rate is 73.4-73.9 mg/l.
Hydrochloric acid: 72 h EC50 of pH 5.1 (0.78 mg/l) for Selenastrum capricornutum (based on biomass) and 72 h EC50 of pH 5.3 (based on growth rate).
Based on the reported LC50 and EC50 values, the substance acetyl chloride is not classified as toxic for the aquatic environment.
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