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Registration Dossier
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EC number: 265-232-9 | CAS number: 64771-71-7 A combination of normal paraffins having carbon numbers predominantly greater than C10 obtained by urea adduction or molecular sieve processes.
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Normal paraffins in the substance "Paraffins (petroleum), normal C>10", are considered to be readily biodegradable, exhibiting 77 to 83% biodegradation in 28 days based on oxygen consumption and meeting the 10-day window.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Normal paraffins in the C9 to C14 Aliphatics category (<2% aromatics) are readily biodegradable, exhibiting 77 to 83% biodegradation in 28 days based on oxygen consumption and meeting the 10-day window.
Moreover, "Hydrocarbons, C14-C20, aliphatics (≤2% aromatics)" were found to be readily biodegradable (biodegradation > 60% ThOD) in an OECD 306 ready biodegradability test.
Therefore, the substance Paraffins (petroleum), normal C>10 is considered readily biodegradable and no further biodegradation studies are deemed necessary.
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