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EC number: 807-935-0 | CAS number: 1244733-77-4
A normalised NOEC of 18.02 mg/kg dw for TCPP was determined in a long-term study with respect to the reproductive performance of earthworms.
Long-term effects of TCPP on the reproductive performance of earthworms (Eisenia fetida) was determined in a study performed in compliance with the OECD draft guideline 222: Earthworm Reproduction Test. Under laboratory conditions, a NOEC reproduction of 53 mg/kg dwt has been determined after 56 days of exposure, (28-day adult plus 28-day juvenile exposure period) (Servajean, 2002).
As the organic matter content was approximately 10% (sphagnum moss peat 10% w/w dry weight of test soil), the result needs to be corrected to obtain a result relevant for natural soils, containing a default of 3.4% organic matter, as recommended in the guidance document on information requirements and chemical safety assessment, Chapter R.10. A correction factor of 0.34 is therefore applied, giving a normalised result of 56-day NOECnormalised 18.02 mg/kg dry weight.
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