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Environmental fate & pathways

Hydrolysis

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Description of key information

Key value for chemical safety assessment

Half-life for hydrolysis:
204 d
at the temperature of:
25 °C

Additional information

The primary hydrolysis tests indicates that the substance is hydrolyzed less than 10% within 5 days at 50°C in the pH buffers 4 and 7 but at pH9, about 23% and 13% hydrolysis was observed for the components C18:1 and C18:2, respectively. In the advanced test at pH9 at temperatures of 20, 50 and 70°C, half-lives for the C18:1 were observed of 6211, 549 and 1149 hours, respectively. For the component C18:2, half-lives were observed of 9316, 589 and 2455 hours at 20, 50 and 70°C, respectively.

Using the Arrhenius relationship, a half-life at 25°C was calculated for the two components of 3616 hours (151 days) for C18:1 component and a half-life of 4893 hours (204 days) for C18:2 component.