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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

DMDS has been demonstrated to be non readily biodegradable according to the results of an OECD 301D test. Still, it gas shown to be partly biodegradable in a OECD 310 test (closed conditions preventing volatilisation): 50 - 60% mineralisation in 28 days.


Moreover the results of an hydrolysis test (OECD 111) indicate that DMDS is also hydrolytically stable in water at environmentally relevant pH and temperatures.


 


Based on intrinsic properties of DMDS (high volatility) and existing data related to log Kow and Koc, it is considered that DMDS is not a candidate for further work concerning bioaccumulation potential for both aquatic and terrestrial compartments. The sediment compartment is also not considered as a compartment of concern for risk assessment.


 


In aerobic and anaerobic studies, the half-lives of DMDS in soil are respectively from 2.89 to 3.04 days and 14.3 days. Results also demonstrate that diffusion is a controlling factor in the kinetic assessment of DMDS. The primary metabolic products of DMDS in soil under aerobic conditions are carbon dioxide and methanesulfonic acid. and the primary metabolic products of DMDS in soil under anaerobic conditions is methanethiol.