Registration Dossier
Registration Dossier
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EC number: 209-750-5 | CAS number: 592-34-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Readily biodegradable (according to OECD criteria).
Based on the available information available for the organic hydrolysis product butanol (CAS 71 -36 -3), the substance is considered as readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Butyl chloroformate is expected to rapidly hydrolyse in contact with water to form butanol (CAS 71 -36 -3), hydrogen chloride (CAS 7647-01-0) and carbon dioxide (CAS 124-38-9). Due to this rapid hydrolysis, the assessment of biodegradation of the parent compound is considered to be of low relevance. As biodegradation does not apply to the inorganic hydrolysis products, only the biodegradation of butanol is assessed here.
OECD in their SIDS document on butanol (2001), classify the substance as readily biodegradable under aerobic conditions based on a range of data. The OECD key data are derived from a 20 -day BOD study according to APHA Standard Methods. In this study settled unacclimated domestic wastewater (3 mL per bottle) is inoculated with test substance concentrations of 3, 7, and 10 mg/L. BOD5, BOD10, BOD15 and BOD20 values (as a percentage of 2.59 g/g ThOD) were 6%, 87%, 92% and 92%, respectively.
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