Registration Dossier
Registration Dossier
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EC number: 209-750-5 | CAS number: 592-34-7
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Parent compound butyl chloroformate (CAS 592-34-7, rapidly hydrolyzing): No data available.
Hydrolysis product hydrogen chloride (HCL, CAS 7647-01-0): No data available.
Hydrolysis product butanol (CAS 71-36-3): 21-d NOEC = 4.1 mg/L
Key value for chemical safety assessment
Additional information
There are no chronic data available regarding the toxic effect of the parent compound butyl chloroformate (CAS 592-34-7) to aquatic invertebrates.
However, as the substance rapidly hydrolyses in contact with water to butanol (CAS 71 -36 -3), hydrogen chloride (CAS 7647-01-0) and carbon dioxide (CAS 124-38-9). The assessment is, therefore, based on the available data of the hydrolysis products.
For the hydrolysis products hydrogen chloride (CAS 7647-01-0) and carbon dioxide (CAS 124-38-9) no long-term toxicity data are available for aquatic invertebrates.
Hydrolysis product – butanol (CAS 71-36-3):
For the hydrolysis product butanol (CAS 71-36-3) a long-term study with Daphnia magna, performed according to OECD guideline 202 (part II) is available (MOE, Japan; 1996). Based on analytically verified nominal test solutions, the 21-d NOEC for reproduction was determined to be 4.1 mg/L.
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