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Description of key information

The half-life for hydrolysis is 1.17 days at the temperature of 25 °C.

Key value for chemical safety assessment

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

Additional information

Hydrolysis of DEO was examined according to OECD test guideline 111 and GLP.

The preliminary test demonstrated that the test substance rapidly hydrolyses at pH 7 and 9. Only at pH 4 a sufficient recovery was found. Thus, the main test was only performed at pH 4.

The half-life times of hydrolysis of the test substance at 20, 35 and 50°C at buffered solutions of nominal pH 4.0 were estimated (a graphical estimation):

t1/2(20 °C) approx. 1.8 days    t1/2(35 °C) approx. 0.5 day      t1/2(50 °C) approx. 0.2 day

The hydrolysis was considered to be described as pseudo-first order reaction.

Hydrolysis products are monoethyloxalate (initial degradation product), ethanol and oxalate (final degradation product)