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Environmental fate & pathways

Hydrolysis

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Description of key information

A hydrolysis study with FAT 40854/A TE was carried out according to EU method C.7, OECD 111, EPA OPPTS 830.2120 and GLP. 
Only the pre-test was carried out.
At pH 4 (50 °C), 6% of hydrolysis was observed after 5 days. As this is less than 10%, the half-life time at 25°C is > 1 year. Therefore, FAT 40854/A TE can be considered hydrolytically stable at pH 4, according to the OECD111 guideline.
At pH 7 and pH 9 (50 °C), respectively 19% and 80% of hydrolysis was observed after 5 days. Performing the higher Tier test was not considered possible for this substance.

Key value for chemical safety assessment

Additional information

No additional testing is required at pH 4. The higher Tier test was not performed at pH 7 and pH 9 as it was concluded that for this multi-constituent it is not possible to determine the half-life time more accurate (degradation products are a part of the original test substance). Also, according to the guidelines, the purity of the test substance should be at least 95% which is not the case for this substance.