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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

The NOEC for soil microorganisms can be set to 3 mg/kg soil dw of Chloramine T, this is equivalent to 2.3 mg/kg soil dw op-TSA.

Key value for chemical safety assessment

Long-term EC10 or NOEC for soil microorganisms:
2.3 mg/kg soil dw

Additional information

No studies are available on this substance but one study is available on Chloramine T which is instantly converted to p-TSA in contact with organic material. p-TSA shows similar toxicity to organisms as op-TSA, therefore this study can be used here as well.

One study, valid with restrictions, is available for terrestrial microorganisms with Chloramine T (CAS 127 -65 -1). Natural soils with an organic carbon content of 0.58%, were exposed to 3 mg/kg soil dw in a 28d study according to OECD guideline 216, in which stimulation of nitrogen mineralization or no effect was found, therefore the NOEC can be set to 3 mg/kg soil dw of Chloramine T, this is equivalent to 2.3 mg/kg soil dw op-TSA.