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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The aerobic biodegradation of Reaction mass of disodium 2,2’-oxydiethanesulfonate and sodium ethenesulfonate  EC nr: 700-978-5  was experimental  measured in key study according to  the  OECD TG310 ( Ready Biodegradability -CO2 in sealed vessels Headspace Test). Under  the test conditions  of OECD  310 Reaction  mass of disodium 2,2 oxydiethanesulfonate and sodium ethenesulfonate  was biodegraded for 17 %  after 28 days. In conclusion, Reaction mass of disodium 2,2’-oxydiethanesulfonate and sodium ethenesulfonate (700-978-5) was not readily biodegradable under the conditions of the Headspace Test.


The aerobic biodegradation of Sodium ethylenesulphonate was als  estimated by BIOWIN version 4.10. included in the EpiSuite programs of US-EPA. The conclusion of BIOWIN is that  Sodium ethylenesulphonate is not readily biodegradable in a standard OECD 301C (MITI) test. The mineralisation is estimated to take weeks and the primary degradation occurs within a timeframe of days.The aerobic biodegradation of Sodium ethylenesulphonate was estimated by the models Biowin 1 and Biowin 2, included in BIOWIN, which are intended to convey a general indication of biodegradability under aerobic conditions, and not for any particular medium.  The models show that  Sodium ethylenesulphonate biodegrades fast.Half lives in surface water and sediment were estimated with the PBT profiler (US-EPA) which calculates half life values from ultimate biodegradation estimations in the Biowin 3 model included in BIOWIN. The calculated half life values for Sodium ethylenesulphonate  are 15 days for surface water and 140 days for sediment.