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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 200-143-0 | CAS number: 52-51-7
Phototransformation in water
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
The photodegradation of 14C-Bronopol at pH 4 in buffered aqueous solutions using artificial sunlight was investigated according to US EPA Pesticide Assessment Guidelines, Subdivision N, Paragraph OPP 161-2 [The Boots Company, 1994].
Results show that Bronopol is photodegraded at environmentally relevant temperatures. Bronopol decreased to 54.35 % after 24 h, 12.62 % after 72 h and was not detected after 168 h. A half-life of 24.3 h was reported at 25°C.
At least three degradation products were observed; however, only two were tentatively identified as tris-(hydroxymethyl)-nitromethane and carbon dioxide with tris-(hydroxymethyl)-nitromethane being further photodegraded.
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.
