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Toxicity to soil macroorganisms except arthropods

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Description of key information

14-day NOEC(standardised)  > 340 mg/kg dry weight

14-day LC50(standardised) > 340 mg/kg dry weight

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
340 mg/kg soil dw

Additional information

Based on Read-Across with 2,2-Bis(chloromethyl)trimethylene bis[bis(2-chloroethyl)phophate

Acute toxicity

A limit test was conducted at a nominal concentration of 1000 mg/kg dry weight. There were no effects on mortality in the test. The 14-day NOEC was therefore >1000 mg/kg dry weight and the 14-day LC50 was >1000 mg/kg dry weight.


The organic matter content was approximately 10% (sphagnum moss peat 10% w/w dry weight of test soil). Therefore the results need to be corrected to obtain a result relevant for natural soils, containing a TGD default of 3.4% organic matter. A correction factor of 0.34 is therefore applied, giving standardised results of: 

14-day NOECstandardised > 340 mg/kg dry weight

14-day LC50standardised > 340 mg/kg dry weight


Chronic toxicity

No data are available for review. Based on the absence of effects in the short-term test it is assumed that the earthworm, Eisenia foetida, would not be the most sensitive species following longer-term exposure.




European Union Risk Assessment Report "2,2-Bis(chloromethyl)trimethylene bis[bis(2-chloroethyl)phophate]" (V6), CAS 38051-10-4, May 2008