Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

No toxicity data for soil macroorganisms, terrestrial plants, soil microorganisms and birds are available for RM of W2C+WC (target substance). However, data are available for sodium tungstate and tungsten metal (source substances), which were used for read-across. Due to lower transformation/dissolution results for the RM of W2C+ WC (target substance) than sodium tungstate (source substance), the resulting toxicity potential would also be expected to be lower, so read-across is appropriate.

In addition, read-across is justified because the classification and labelling is less severe for the target substance than the source substance and the PBT/vPvB profile is the same. Finally, the dose descriptors are, or are expected to be, sufficiently similar or lower for the target substance, and read-across to the source chemical is adequately protective. For more details refer to the attached description of the read across approach.