Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

7ppd was found to be hydrolytically instable at pH 4, pH 7 and pH 9.

Additional information

Hydrolysis

7PPD was found to be hydrolytically instable at pH 4, pH 7 and pH 9.

 

The follwoing dissappearance time (DT50) and half-life time was estimated:

DT50 (20 °C, pH 4): approx. 370 h

DT50 (20 °C, pH 4): approx. 15 h

t(1/2) (20 °C, pH 7): 7 h

t(1/2) (50 °C, pH 7): 1 h

DT50 (20 °C, pH 9): approx. 10 h

DT50 (20 °C, pH 9): approx. 1 h

The following degradation products were detected:

pH 4: aniline, p-benzoquinone, p-hydroquinone

pH 7: aniline, p-benzoquinone, unknown component

pH 9: aniline, unknown component

 

Photolysis

7PPD degrades rapidly by indirect photolysis and by hydrolysis.