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Environmental fate & pathways

Hydrolysis

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Description of key information

Hydrolysis is not a relevant degradation pathway

Key value for chemical safety assessment

Additional information

No experimental data evaluating the hydrolysis of Reaction mass of sodium hydrogen N-(1-oxooctadecyl)-L-glutamate and stearic acid are available. However, according to Regulation (EC) No. 1907/2006, Annex VIII, column 2 (9.2.2.1), testing hydrolysis as a function of pH is not required since the substance is readily biodegradable.

Nevertheless, most amides hydrolyze to acids extremely slowly under environmental conditions with half-lives measured in centuries. Electronegative groups on carbon or nitrogen greatly accelerate base catalyzed hydrolysis, but alkyl groups on nitrogen retard both acid and base catalyzed processes (Mabey and Mill, 1978). Thus, hydrolysis is not considered to be a relevant degradation pathway for Reaction mass of sodium hydrogen N-(1-oxooctadecyl)-L-glutamate and stearic acid in the aquatic environment.

 

Mabey W & Mill T. 1978. Critical review of hydrolysis of organic compounds in water under environmental conditions.J Phys Chem Ref Data 7(2): 383-415