Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance and its relevant degradation products decompose rapidly
Cross-reference
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Readily biodegradable
The biodegradation of the substance is evaluated in a weight of evidence approach by considering data on Similar Substances. Justification for Read Across is given in Section 13 of IUCLID.
Based on the article of 2010, the biodegradability of some fat liquors has been tested in order to establish the environmental impact and the efficiency of the tratment plant. the degradation order is oxidised sulphited castor oil > fish oil > rape oil > mineral oil. 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.
In a similar article of 2008, the biodegradation behaviours of the six fatliquors at different concentrations were investigated. The respiration of activated sludge in fatliquor solutions was measured and used to assess the biodegradability of fatliquors. The test materials fatliquor exhibit good biodegradability when their concentrations range from 125 mg/l to 750 mg/l.
A 1976 aerobic biodegradation study with Similar Substance 01 in an activated sludge inoculated system, documented DOC removal consistent with 96 % biodegradation in 45 days.
The substances are considered to be readily biodegradable.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
