Registration Dossier
Registration Dossier
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: 204-847-9 | CAS number: 127-52-6
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
According to the TNsG on data requirements (p. 107), this study is required provided the biocide is directly applied /emitted to soil.
This is confirmed by Figure 1 (p. 108) (TNsG) which shows that soil studies are required only where the STP partition coefficient is >5000. Hence, emissions to the soil via sewage sludge is considered insignificant unless Kp > 5000.
Chloramine B trihydrate is not inteded for direct use on soils, but it is used in industrial, professional and private facilities. Hence a direct contamination of soil is unlikely.
Indirect contamination of the soil environment is unlikely, too, for the following reasons.
Chloramine B trihydrate is not biodegradable (see DOC IIIA 7.1.1.2). However, during its application and its discharge in wastewaters, complete degradation occurs by fast dechlorination (see DOC III-A_7.3.3_1 and DOC III-A_7.3.3_2), The dechlorinated form of Chloramine B, benzenesulphonamide (BSA), is readily biodegradable (see DOC IVA / A29 and A30). Hence at the proposed use concentrations, chloramine B trihydrate degrades completely and does not enter the environment.
As the substance – via fast dechlorination to its metabolite BSA – is readily biodegradable, further investigations with respect its its fate in soil ecosystems are obsolete.
Key value for chemical safety assessment
Additional information
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.
