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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Sort-term toxicity to fish

Parent compound isobutyryl chloride: With high probability acutely not harmful to fish (96 -h LC50 = 280.7 mg/L).

Hydrolysis product isobutyric acid: With high probability acutely not harmful to fish (96 -h LC50 = 146.6 mg/L).

Hydrolysis product HCL: Acutely toxic to fish (pH dependent; 96-h LC50 = 4.92 mg/L).

Short-term toxicity to aquatic invertebrates

Parent compound isobutyryl chloride: No data available.

Hydrolysis product isobutyric acid: Acutely harmful to aquatic invertebrates (48 -h EC50 = 51.25 mg/L).

Hydrolysis product HCL: Acutely very toxic for aquatic invertebrates (pH dependent, 48 -h EC50 = 0.492 mg/L).

Toxicity to aquatic algae and cyanobacteria

Parent compound isobutyryl chloride: No data available.

Hydrolysis product isobutyric acid: Acutely harmful to aquatic algae (72 -h ErC50 = 53.9 mg/L).

Hydrolysis product HCL: Acutely very toxic for aquatic organisms (pH dependent, 72 -h ErC50 = 0.492 mg/L).

Toxicity to microorganisms

Parent compound isobutyryl chloride: No data available.

Hydrolysis product isobutyric acid: EC10 = 39 mg/L

Hydrolysis product HCL: no data available