Registration Dossier
Registration Dossier
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EC number: 264-705-7 | CAS number: 64147-40-6
Endpoint summary
Administrative data
Description of key information
Additional information
A study was conducted to determine the ready biodegradability of castor oil, dehydrated according to OECD Guideline 301F (manometric respirometry test). The substance degraded by ca. 40% within 28 days and was therefore not considered to be readily biodegradable under the strict conditions of this study (Hammesfahr, 2012).This may be linked to the presence of the large adducts which are likely to degrade at a slower rate than triglycerides.
The soil biodegradation half-life of castor oil, dehydrated was estimated according to the Mackay level III fugacity model of EPIWIN and found to range from 75 to 120 days (U.S. Environmental Protection Agency, 2012b).
Overall, these substances (i.e. triglycerides and adducts thereof) are well known to be easily broken down by a range of microorganisms such as gram-positive or gram-negative bacteria, a number of fungi and yeasts as well as several types of algae (Fabig et al., 1989), regardless of their functional groups and chain length (Moucawi, 1981; Hita et al., 1996). Therefore, while they don’t meet the stringent criteria for classification as readily biodegradable and have a modeled half-lives in soil of up to 120 days, they do biodegrade and thus castor oil, dehydrated is not expected to persist in the aquatic or soil environment.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.
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