Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 941-810-2 | CAS number: -
Endpoint summary
Administrative data
Description of key information
The test item is considered as being readily biodegradable.
Testing of hydrolysis and adsorption/desorption behaviour was not conducted because the test item is readily biodegradable and has a LogKow <3.
Additional information
Biodegradability
The biodegradability of the analogue substance Sophorolipids was investigated in a guideline study.
OECD guideline 301F
The biodegradation of the test substance was investigated over a 28 day period in a manometric Respirometry Test according to OECD Guideline 301 F (1992). The test medium was inoculated with microorganisms from a digester of a sewage treatment plant mainly fed with municipal wastewater.
The rate of degradation was monitored by measuring the quantity of oxygen required to maintain a constant gas volume in the respirometer flasks over 28 days.
Sodium benzoate was used as a degradable reference substance at a concentration of 100 mg/L, along with a toxicity control at 100 mg/L test substance and 100 mg/L sodium benzoate. The biodegradation of the test substance was found to be at mean 69 % with a standard deviation of 0.8 % for a concentration of 100 mg test substance/L and at mean 85 % with a standard deviation of 5.4 % for a concentration of 60 mg test item/L. For a concentration of 100 mg test substance/L biodegradation within the 10-day-window was found to be 61 %.
For a concentration of 60 mg test substance/L biodegradation within the 10-day-window was found to be 75 %.
The degradation of of the reference substance sodium benzoate had reached 83 % within the first 14 days.
According to the guideline, the test item is considered as beingreadily biodegradableunder the test conditions.
Hydrolysis
Testing is not required. According to the REACH Regulation, Annex VIII, column 2 the study does not need to be conducted if the substance is readily biodegradable. Handbook data describe that the test substance hydrolyses under to both acid and alkaline conditions. Transformation products are sophorose and deacetyled free acids.
Adsorption / desorption
Koc was calculated for the read-across substance with EUSES 2.1.2 using the following parameters:
Molecular weight: 623 g/mol (molecular weight of main constituent based on oleic acid as major fatty acid moiety for the acidic form with the
representative molecular formula of C 30 H 54 O 13)
Melting point: 150 °C
Vapour pressure: minimum (1E-06)
Water solubility: 0.2 g/L (according to critical micelle concentration (CMC))
LogKow: 2.4, worst case value calculated from measurement of CMC and solubility in octanol
Chemical class: default QSAR
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.
