2,5-bis-isocyanatomethyl-bicyclo[2.2.1]heptane

Toxicity to soil macroorganisms except arthropods

Administrative data

Endpoint:

toxicity to soil macroorganisms except arthropods: short-term

Data waiving:

exposure considerations

Justification for data waiving:

the study does not need to be conducted because direct and indirect exposure of the soil compartment is unlikely

Justification for type of information:

In accordance with column 1 and 2 of REACH Annex IX, the study Toxicity to soil macroorganisms except arthropods (section 9.4) does not need to be conducted as the chemical safety assessment does not indicate the need to further investigate the effects on soil macroorganisms except arthropods, as the substance and its hydrolysis product do not have a high potential to adsorb to soil and as direct and indirect exposure of soil is unlikely (see chapter 9 of the CSR).
In the absence of toxicity data for soil organisms, the PNECsoil was calculated using the equilibrium partitioning method (EPM) in accordance with ECHA R.10 (2008, chapter R.10.6.1, p 39). This method uses the PNECwater for aquatic organisms (value: 19.1 µg/L), the Henry constant (value:3.09 Pa m3/mol) and the suspended matter/water partitioning coefficient (value: 33) as inputs.  A conversion factor of 1.13 from wet to dry weight is used. The Risk Characterisation Ratio (RCR = PEC/PNECsoil) is < 1.