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Description of key information

No abiotic degradation of the test item was observed. Ditolylether was found to be stable at 50 °C and pH 4, 7 and 9. 

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Additional information

The recovery of the test substance was slightly below the criterion of 90 % at pH 7 which would in general be interpreted as hydrolytic degradation. However, if any, hydrolytic degradation would be expected at pH 4 as ether cleavage only occurs under acidic conditions. Cresols would be the hydrolysis products expected at pH 4 but could not be detected using the GC twister method (p-cresol was calibrated as representative substance for the cresols). Thus, it is even more unlikely that abiotic degradation took place at pH 7.

Consequently, Ditolylether is assumed to be stable at 50 °C and, thus, as well as at 25 °C, no half-life times and hydrolysis rates were calculated.