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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 939-270-8 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Four reliable key studies are provided in the dossier as evidence for ready biodegradability of the Guerbet Alcohols (see CSR Section 4.1.2). Richterich (1998a and b) demonstrated that 2-hexyldecanol and 2-octyl-1-dodecanol fulfilled the 10-day window and are considered readily biodegradable. The OECD SIDS Initial Assessment Report for Long Chain Alcohols (2006) concludes that linear and essentially linear C6-22 alcohols are rapidly biodegradable especially at environmentally relevant concentrations.
Biodegradation of long-chain alcohols will not produce degradation products of concern, as reported in a study by Federle and Itrich (2006) where long chain alcohols rapidly decayed in water treatment processes. The half-lives of all the long chain alcohols tested were less than one minute and the removal in activated sludge plants of long-chain alcohols, such as hexadecanol, is reported to be 99.46%.
There is sufficient information available to indicate that 2-octyl-1-dodecanol is likely to adsorb to sediments and soils, for example, McCall (1981) classified 2-octyldodecanol with a Koc >5,000. Measured adsorption values for hexadecanol (Koc of 143,000) and octadecanol (Koc of 471,000) are presented in the SIDS SIAR Long Chain Alcohols Report (2006). In this CSR, the study by Bodsch (2009) reported a Log Koc of 8.92 for 2-octyldodecanol in soil with a corresponding Koc value of 8.4x108. For sewage sludge the Log Koc was determined to be 9.79 with a corresponding Koc of 6.2x109.
From these data it is expected that 2-octyl-1-dodecanol will be immobile in soils and sediment. However, while a substance may adsorb readily to sediment, sludge and soil, when it rapidly degrades, the availability of the substance to bind to substrates will be limited by degradation. In addition, where a substance does sorb to sediment or soil, the substance will be readily degraded as it desorbs.
In conclusion, the Guerbet Alcohol will be rapidly removed from the environment due to its ready biodegradability.
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.
