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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

Inhibition of soil nitrogen transformation by soil micro-organisms was examined in a study with TDCP conducted voluntarily by industry (van Ginkel, 2005). A 28-day NOEC of ≥128 mg/kg wet weight (no inhibition at the highest concentration tested) was determined in the test.

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for soil microorganisms:
128 mg/kg soil dw

Additional information

Due to the structural similarity of TDCP to TCPP, their similar physico-chemical properties and their lack of toxicity to soil micro-organisms, it is considered justifiable to read-across the long-term soil nitrogen transformation effects data from TDCP to TCPP. This was agreed at TCNES III 05.