Registration Dossier
Registration Dossier
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EC number: 211-121-5 | CAS number: 629-97-0
Endpoint summary
Administrative data
Description of key information
Hydrolysis:
Hydrolysis is a reaction in which a water molecule of hydroxide ion substitutes for another atom of group of atoms present in a chemical resulting in a structural change of that chemical. Potentially hydrolysable groups include alkyl halides, amides, carbamates, carboxylic acid esters and lactone epoxides, phosphate esters, and sulfonic acid esters. The lack of a suitable leaving group renders compounds resistant to hydrolysis.
Docosane does not contain hydrolysable groups and has a very low potential to hydrolyze. Therefore this degradative process will not contribute to its removal from the environment.
Biodegradation:
The results from the ready biodegradability studies for GTL Base Oil Distillates ranged from 11-67% after 28 days. The main factors influencing the results include the guideline/method followed, the dosing method and the viscosity/composition of the test substance. In general, the biodegradability of the subtances decrease as the viscosity (and hence carbon chain length/degree of branching) increases. In fact, the lowest viscosity substances almost meet the criteria for ready biodegradability. Overall GTL Base Oil Distillates is not considered to be readily biodegradable but is expected to be inherently biodegradable.
This data is used for read across to Docosane.
Adsorption / desorption:
The adsorption coefficient (Koc) of the test material (C18-C50 branched, cyclic and linear hydrocarbons – Distillates (CAS# 848301-69-9) was determined to be >4.27 x 10E5, log10 Koc >5.63.
The Koc of icosane has been estimated by calculation in the Concawe Library of Petrorisk, using SPARC v4.2 program (May 2008). The calculated value is 1.84 x 1011L/kg, using a log Kow of 11.46. This result suggests that icosane is expected to be immobile in soil.
The data available for C18-C50 branched, cyclic and linear hydrocarbons – Distillates (CAS# 848301-69-9) and icosane is used for read across to Docosane.
Additional information
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