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Environmental fate & pathways

Phototransformation in air

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Description of key information

 After evaporation or exposure to the air, the product will be rapidly degraded by photochemical processes with OH-radicals.

Key value for chemical safety assessment

Half-life in air:
28.3 h
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information

Phototransfomation of N,N-Dimethylacetamide (CAS 127-19-5) was investigated by Koch et al. (1997) by measurement of rate constants for reaction of the substance with OH radicals at 300°K (26.85°C) and 384°K (110.85°C) using flash photolysis/resonance fluorescence. A half-life of 28.3 hours for the reaction with OH-radicals as sensitizer was measured at 26.85 °C; the OH-rate constant was determined to be 13.6E-12 cm³/sec at 26.85 °C.