Registration Dossier
Registration Dossier
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EC number: 270-307-4 | CAS number: 68424-50-0
Endpoint summary
Administrative data
Description of key information
Additional information
A study according to OECD 301D has been performed onFatty acids, tall oil, C12 -15 alkyl esters, sulfated, sodium saltsa and indicates that no ready biodegradability was observed. Nevertheless the degradation curve is regularly increasing during the whole test, it's not reaching a limit value and microorganisms are not inhibited. Therefore inherently biodegradability can be expected.
In a 2010 Published study the biodegradability order for castor oil > fish oil > rape oil > mineral oil sulphated has been evaluated. In degradation kinetics studies (Luo et al 2010) the degradation rate constant (k) of sulphated castor oil, fish oil and rape oil are 0.87, 0.84, and 0.81 d-1, respectively. These degradation rate constants are slightly faster for the sulfited fatliquor substances where castor, fish and rape were 0.95, 0.93, and 0.85 d-1, respectively.). The higher content of unsaturated fatty acids and hydroxyl groups, the faster is the biodegradability of fatliquors.
A 1976 aerobic biodegradation study with the sodium salt of sulfated castor oil (CAS 68187-76-8) in an activated sludge inoculated system, documented DOC removal consistent with 96% biodegradation in 45 days.
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