Registration Dossier

Diss Factsheets

Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Due to the expected oxidation of sulfite to sulfate under environmental conditions (worst-case half life of 77h), and its physicochemical properties which make adsorption to sediments unlikely, the derivation of a PNEC for the terrestrial compartment is not feasible/appropriate.

Key value for chemical safety assessment

Additional information

Due to the expected oxidation of sulfite to sulfate under environmental conditions (worst-case half life of 77h), and its physicochemical properties which make adsorption to sediments unlikely, the derivation of a PNEC for the terrestrial compartment is not feasible/appropriate:

-      due to rapid oxidation of sulfite/disulfite substances, no relevant test design and toxicity data can be generated

-      due to the lack of a relevant adsorption coefficient for sulfites/disulfites to soil, the equilibrium partitioning method for deriving a PNECterrestrial is not applicable

-      taking into account the industrial use, exposure pathways and environmental fate of sulfite/disulfite substances, long-term exposure of sediment organisms to this substance can be excluded.

Consequently, there is no need to derive a PNECterrestrial for sulfite/disulfite compounds.