Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Since thiosulfates are inorganic substances, they are intrinsically not susceptible to biological degradation. Because of their dissociation in aqueous media which leads to the formation of thiosulfate anions, these substances have a very low log Pow . Therefore, bioaccumulation is unlikely and any experimental testing is scientifically not meaningful. However, thiosulfates are powerful reducing agents and will undergo oxidation mediated by micro-organsims at a short term under environmentally relevant conditions. In conclusion, thiosulfates may reasonably be considered as chemically unstable under conditions typical of most environmental test systems, being transformed into other chemical species (i.e., sulfites and sulfates).