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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

With high probability acutely not harmful to terrestrial plants.

Key value for chemical safety assessment

Additional information

The LC0 and EC0 values of a GLP toxicity study on various terrestrial plants ( Lolium perenne, Brassica rapa and Vica sativa) with an analogous substance (EC 401-540-3) according to OECD 208 were found to be greater than 1000 mg/kg soil dry weight (CIBA-GEIGY 1990c).

The read-across substance (EC 401-540-3) has similar physicochemical, toxicological and ecotoxicological properties. It is also of low water solubility and degradation and hydrolysis are not likely. Due to the inert structure no break-down products will occur in the environmental compartments.

The read-across substance differs by a chlorine in para-position of both phenyl rings instead of a second phenyl ring. Therefore, the molecular diameter is slightly smaller. The common functional group is the 2,5 -dihydro-pyrrolo(3,4 -c)pyrrole-1,4 dione core. It is the chromophore that is both poorly soluble in organic and in inorganic solvents. It can be assumed based on the chlorines that the water solubility is predicted to be slightly better and a worst case substance has been tested.