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Description of key information

A hydrolysis study on 44PD  revealed that 44PD hydrolyses at pH4, pH7 and pH9. Additionally, the kinetic behaviour of the hydrolysis products detectable by HPLC-UV analysis were monitored and reported for pH 7 and pH 9.    Results are DT50 (20 °C, pH 4): approx. 230 hours; DT50 (50 °C, pH 4): approx. 30 hours; Half-life-time (20 °C, pH 7): t(1/2) = 5.3 hours; DT50 (20 °C, pH 9): approx. 1.5 hours. The final hydrolysis products are p-benzoquinone, p-hydroquinone and 1-methyl-propylamine (sec-butylamine). 

Key value for chemical safety assessment

Half-life for hydrolysis:
5.3 h
at the temperature of:
20 °C

Additional information