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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Phototransformation in water

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Administrative data

Link to relevant study record(s)

Description of key information

A photolysis study was conducted with dimethylhydantoin (DMH). 14C-DMH at a nominal concentration of 10 µg/L of aqueous buffer at pH 7 was exposed to a veon arc light source for 30 days at 25 °C.. The claculated photolysis rate constant and half life of DMH were 7.89 x 10^-4 days and 878 days respectively.  

Key value for chemical safety assessment

Additional information