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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

In the atmosphere primary fatty amine ethoxylates  are likely to be degraded by reaction with hydroxyl radicals and ozone.. 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, a degradation half-life of (0.677 to 0.705 hours) for both 2,2’(octadec-9-enylimino)-bisethanol and bis (2 -hydroxyethyl) tallow alkylamine was calculated. For the exposure calculations, a mean value of 0.7 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.

Key value for chemical safety assessment

Half-life in air:
0.7 h

Additional information

The degradation rate constant is 181.9311 E-12 cm3/molecule/second for both for both 2,2’(octadec-9-enylimino)-bisethanol and bis (2 -hydroxyethyl) tallow alkylamine