Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 204-469-4 | CAS number: 121-44-8
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
The key value for chemical safety assessment are taken from a calculation procedure according to Atkinson (1987).
Key value for chemical safety assessment
- Half-life in air:
- 4.5 h
- Degradation rate constant with OH radicals:
- 92.56 cm³ molecule-1 s-1
Additional information
A study about phototransformation in air of TEA was published by Pitts et al. (1978). The experiments were performed in large outdoor chambers under natural conditions of temperature, humidity, and illumination. The substance was allowed to be two hours in the dark and was then exposed to sunlight. The triethylamine did completely disappear after 90 minutes of illumination.
In 2008, BASF SE calculated the phototransformation in air by using the computer tool SRC AOPv1.92, by US-EPA. Here a dissipation half-life of TEA with 4.16 hours was the result. It is important to mention, that this modelling approach does not intend to cover ionisable compounds.
Another calculation was done by Atkinson in former times (1987), whereby a 50 % degradation of the test substance with a sampling time of 4.5 hours is reported.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
