Registration Dossier
Registration Dossier
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EC number: 268-899-4 | CAS number: 68153-95-7 This substance is identified by SDA Substance Name: C12-C18 dialkyl amine and SDA Reporting Number: 16-042-00.
Endpoint summary
Administrative data
Description of key information
Additional information
For the poorly soluble dialkylamines ready biodegradability test results in excess of 60% at day 28 are available for the short (C12) and long (C18) chain.
Generally, the alkyl chains of fatty amine derivatives are potentially excellent sources for microbial growth. Recent investigations have demonstrated that microorganisms catalyse the oxidation of long alkyl chains on the fatty amine derivatives releasing hydrophilic moieties. The initial attack on Dialkylamines occurs on the Calkyl-N bond, releasing the corresponding alkanals, which are further oxidised to the corresponding alkanoic acids, which are then subject to normal fatty acid metabolism by ß-oxidation, ultimately yielding carbon dioxide and water. This biodegradation pathway demonstrates that Dialkylamine are completely mineralised by microorganisms. Both the alkyl chain length and unsaturated bonds in the alkyl chain have little or no effect on biodegradation of Dialkylamines by pure cultures (Van Ginkel, 1996;van Ginkel et al., 1995;Yoshimura et al., 1980)[Handbook of Detergents, Part B, Environmental Impact, Chapter 19, van Ginkel, Biodrgradation of Cationic Surfactants CRC Press, 2004, ISBN 978 -0824703530] .
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