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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 200-927-2 | CAS number: 76-03-9
Phototransformation in water
Administrative data
Link to relevant study record(s)
Description of key information
Supporting studies: Data from publications.
Key value for chemical safety assessment
Additional information
Supporting studies:
Based on the experiments reported here, it can be safely concluded:
1. Individual irradiation of Trichloroacetic acid solution with US or UV produced perceptible changes in TOC removal and formation of Cl- ions. However, it is important to note that the decomposition of aqueous Trichloroacetic acid becomes more remarkable in photosonochemical process.
2. In photosonochemical process, the dechlorination rate of test substance under oxygen is higher than that under air.
3. The effect of the solution pH value on the photosonochemical degradation of test substance is complicated. In this case, higher pH is effective to dechlorination and TOC removal.
The half-life of trichloroacetic acid from the photodegradation at 15 °C is 6 day.
With titanium dioxide:
Rate constant/s IC= 1,28x10-6
Rate constant/s titration= 1,15x10-6
Without titanium dioxide:
Rate constant/s IC=6,40x10-8
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.
