Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Polysulfides in aqueous solutions will practically always be deprotonated. At neutral and slightly alkaline conditions, S62-, S52-, and S42- dominate. These polysulfides are unstable especially under acidic conditions because polysulfides dissolved in water disproportionate as for instance according to the following reaction; Sn2- + H+--> Sn-1+ HS-. The rates of polysulfide oxidation are high compared to the oxidation rates of sulfide. The half-life of sulfide under oxic conditions is considered to be in the order of a few hours to days.