Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Two studies show that p-TSA is readily biodegradable; one is a publication, valid with restrictions, in which the degradation pathway is described and from which can be concluded that p-TSA is readily biodegradable and the other is a full GLP Closed bottle Test according to standard guideline which shows that p-TSA is readily biodegradable and not toxic to the microorganisms at 2 mg/L.

p-TSA is also completely mineralized in soil as can be seen from a study with Chloramine-T (CAS 127 -65 -1) Chloramine-T trihydrate is a strong oxidizing agent in aqueous solution and when brought into contact with organic matter (soil) it reacts and leaves p-tolunenesulfonamide as the only detectable transformation product. The rate and route of p-toluenesulfonamide biodegradation depends on the soil type. But in each tested soil type p-toluenesulfonamide is totally mineralised.

Sandy loam soil: Disappearance of p-toluenesulfonamide was calculated with DT50 and DT90 values of 30 days and 110 days, respectively.

Humic sand soil: Disappearance of p-tofuenesulfonamide was calculated with DT50 and DT90 values of 68 days and 249 days, respectively. 

Low humic content sand soil: The DT50 and DT90 values for the disappearance of p-toluenesulfonamide were estimated to be between 28 days and 56 days.