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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

The 3h-EC10 is 10.5 mg/L (nominal) for microorganisms.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
10.5 mg/L

Additional information

One study, valid without restrictions, is available with Chloramine T (CAS 127 -65 -1)

(Geerts, 2012). As Chloramine T is instantly converted to p-TSA in the presence of organic material, this study can be used for p-TSA as well. Toxicity to microorganisms was determined according to OECD Guideline 209 and the 3h-EC10 was found to be 14 mg/L (nominal). The 3h-EC50 was 37 mg/L (nominal). Converted to p-TSA the 3h-EC10 and and 3h-EC50 are 10.5 mg/L and 27.8 mg/L, respectively.