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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

EC50 (72 h) > 100 mg/L
NOEC (72h): 100 mg/L

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

In a study according OECD guideline no. 201 the effects of the test item Sodium 2-hydroxyethanesulphonate on the growth of the freshwater green alga Desmodesmus subspicatus were tested.

The concentration of the active ingredient Sodium 2-hydroxyethanesulphonate was analysed in the limit concentration and the control at test start and test end via LC-MS. The measured concentration at test start was 94 % of the nominal value. At the end of the test the test item gave a recovery of 98 %. All effect values are given based on nominal test item concentrations.

No inhibiting effects on specific growth rate and yield were found in the limit concentration of 100 mg/L. The EC50-values for specific growth rate inhibition (ErC50) and inhibition of yield (EyC50) after 72 h were > 100 mg/L.