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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 618-944-2 | CAS number: 93413-69-5
Phototransformation in water
Administrative data
Link to relevant study record(s)
Description of key information
The study (Wyeth, 1991) divided into Fluorescent Photodegradation and UV Photodegradation.
The test substance was shown to undergo light-induced degradation in solution at pH 1, 7 and 10 when subjected to 500 foot-candle of fluorescent light at 25℃. Base on these results, consideration should be given to protecting any solution formulation of the test substance from light.
Under UV radiation, the test substance in 0.1 N HCl stored in quartz test tubes degraded to give 2-(4-methoxyphenyl)-1-dimethylaminoethane, 2-(4-methoxyphenyl)-1-aminoethane, 2-(4-methoxyphenyl)-1-methylaminoethane and an unknown product B. At pH 7, compounds 1-[2-amino-1-(4-methoxyphenyl)ethyl]cyclohexanol and 1-[1-(4-methoxyphenyl)-2-(methylamino)ethyl]cyclohexanol were also detected. At pH 10, the only significant degradation products were 1-[1-(4-methoxyphenyl)-2-(methylamino)ethyl]cyclohexanol and an unknown A.
Key value for chemical safety assessment
Additional information
The study (Wyeth, 1991) divided into Fluorescent Photodegradation and UV Photodegradation.
The test substance was shown to undergo light-induced degradation in solution at pH 1, 7 and 10 when subjected to 500 foot-candle of fluorescent light at 25℃. Base on these results, consideration should be given to protecting any solution formulation of the test substance from light.
Under UV radiation, the test substance in 0.1 N HCl stored in quartz test tubes degraded to give 2-(4-methoxyphenyl)-1-dimethylaminoethane, 2-(4-methoxyphenyl)-1-aminoethane, 2-(4-methoxyphenyl)-1-methylaminoethane and an unknown product B. At pH 7, compounds 1-[2-amino-1-(4-methoxyphenyl)ethyl]cyclohexanol and 1-[1-(4-methoxyphenyl)-2-(methylamino)ethyl]cyclohexanol were also detected. At pH 10, the only significant degradation products were 1-[1-(4-methoxyphenyl)-2-(methylamino)ethyl]cyclohexanol and an unknown A.
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.
