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EC number: 696-364-9
CAS number: 133779-11-0
Degradation rate constants and half-lifes have been calculated with AOP for various alkyl-1,3-diaminopropanes. The averaged values calculated for the octadecyl and tetradecyl-1,3-diaminopropanes have been used as key value.
In the atmosphere alkyl-1,3-diaminopropanes are 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, degradation half-lives of 2.9
h for tetradecyl-1,3-diaminopropane, 2.8 h for
octadecyl-1,3-diaminopropane, and 2.0 and 1.9 h for the cis- and
trans-isomer of oleyl-1,3-diaminopropane, respectively, were calculated.
For the exposure calculations, a mean value for the saturated amines of
2.8 h is used. 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.
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