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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Half-life (water surface): >= 9.2 days

Half-life (whole water column): >= 2.1 years

Key value for chemical safety assessment

Additional information

One literature study regarding the phototransformation of DMAC in water is available (Dorfman 1973/Zepp et al. 1987). The degradation in surface water was analyzed at lake Greifensee in Switzerland. A half-life for the water surface (average OH radical concentration 2.5E-16 mol/l) of >= 9.2 days and and for the whole water column (depth = 14 m) of >= 2.1 years (average OH radical concentration 3.0E-18 mol/l) was determined.