Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

A study to investigate the hydrolysis as a function of pH for 2,2'-dimethyl-2,2'-azodipropiononitrile was conducted according to OECD Guideline 111 at temperatures of 60±1°C, 70±1°C and 80±1°C and extrapolated to 25°C. The results were as follows: Rate constant 1.08x 10-4 and half life of 263 days at pH 4; Rate constant 9.50x10-5 and half life of 304 days at pH 7 and Rate constant 1.38x10-4 and half life of 210 days at pH 9. On this basis azobis(cyanoisopropyl) can be considered as a stable substance not subject to hydrolysis.