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Environmental fate & pathways

Phototransformation in air

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Description of key information

In the atmosphere di (2-hydroxypropyl)tallow amine is likely to be degraded by reaction with hydroxyl radicals. Degradation rates for some components were calculated with the Atmospheric Oxidation Programme based on structure activity relationships developed by  Atkinson (1987). With a concentration of 500,000 OH-radicals/cm3, half-lives of 3 h for di (2-hydroxypropyl) octadecylamine. Because there are no important releases into the atmosphere and volatilisation is expected to be negligible, this removal mechanism is thought to be of low relevance.

Direct photolysis of alkyl-1,3-diaminopropanes in air will not occur, because it does not absorb UV radiation above 290 nm .Photo transformation in air is therefore assumed to be negligible

Key value for chemical safety assessment

Half-life in air:
3 h

Additional information

Rate constant and half-life as calculated for di (2 -hydroxypropyl)octadecylamine were used.