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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

The test data show that for p-TSA equivalent residues a worst-case bioconcentration factor of 2.2 was derived using fingerling fish and the p-TSA equivalent concentration.

Key value for chemical safety assessment

BCF (aquatic species):
2.2 dimensionless

Additional information

One study, valid with restrictions, is available with Oncorhynchus mykiss. The study was performed with Chloramine-T (CAS 127 -65 -1), but as p-TSA was detected and actually BCF values were calculated for p-TSA, this study can be used here as well.

The kinetic whole body BCF as calculated from the accumulation and depuration from fingerling half-lives using the p-TSA equivalent concentration (worst-case). The k1/k2 ratio as calculated according to OECD guideline 305 is 2.2 based on LSC. It should be noted that this ratio must be considered as a worst-case value because it is calculated using the p-TSA equivalent concentration for fingerlings, using the average depuration rate during the whole curve expressed in relation to the whole body. Lower ratios would be obtained if the data for juvenile rainbow trout would have been used.