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EC number: 200-741-1
CAS number: 70-55-3
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.
soil: Disappearance of p-toluenesulfonamide was calculated with DT50 and
DT90 values of 30 days and 110 days, respectively.
soil: Disappearance of
p-tofuenesulfonamide was calculated with DT50 and DT90 values of 68 days
and 249 days, respectively.
content sand soil: The
DT50 and DT90 values for the disappearance of p-toluenesulfonamide were
estimated to be between 28 days and 56 days.
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