Registration Dossier
Registration Dossier
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EC number: 639-864-4 | CAS number: 43133-95-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
An OECD 301F Manometric Respirometry test was conducted using C6-C7, n-alkanes, isoalkanes, cyclics C6 aliphatics. The test substance was 98% degraded at the end of 28 days, and 83% degraded at the end of the 10 -day window. The substance is therefore considered to be readily biodegradable
Key value for chemical safety assessment
Additional information
A OECD 301F Manometric Respirometry test was conducted using C6-C7, n-alkanes, isoalkanes, cyclics C6 aliphatics (Shell 1997). This has been read across to Methylpentane. The test substance was 98% degraded at the end of 28 days, and 83% degraded at the end of the 10 -day window. The reference substance was 104% degraded, therefore the test is valid. The test substance is readily biodegradable and does not inhibit degradation. This is supported by QSAR Biowin, a predictive model for determining quantitative primary biodegradation half-lives for individual petroleum hydrocarbons. This model uses a fragment-based approach. The model predicated n-hexane to be readily biodegradable. This has been read across to Methylpentane.
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