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REACH

sec-butyl chloroformate

EC number: 241-475-6 | CAS number: 17462-58-7

Life Cycle description
Uses advised against

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Hydrolysis product sec-butanol: With high probability acutely not harmful to aquatic invertebrates.
Hydrolysis product HCl: Acutely very toxic for aquatic invertebrates (pH dependent).

Key value for chemical safety assessment

Additional information

There are no data available regarding the toxic effect of the parent compound to aquatic invertebrates. The key study with the hydrolysis product sec-butanol comes from a test with Daphnia magna. The EC₅₀ (48 h) was 4227 mg/L, indicating no harmful effects (OECD, 2002).

The hydrolysis product HCl showed acutely very toxic effects due to low pH: EC₅₀ (48 h) = 0.492 mg/L (OECD, 2002).

Species	Results	Remarks	Reference
Daphnia magna	EC₅₀ (48 h) = 4227 mg/L (nominal)	Hydrolysis product sec-butanol; reliability: 2, key study	OECD, 2002
Daphnia magna	EC₅₀ (48 h) = 0.492 mg/L (acid equivalent to pH 5.3), semi-static, with analytical monitoring, OECD TG 202	Hydrolysis product HCl; reliability: 2	OECD, 2002

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