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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Description of key information

No data on skin sensitizing properties of SDEC, both the anhydrous (pure) form and its 26% aqueous solution, are available. Under Column 2, Annex VII, of the REACH legislation a skin sensitization study does not need to be performed if the chemical is a strong base (pH>11.5). Anhydrous (pure) SDEC has an alkaline pH (>11.5), and it will be proposed for classification for skin corrosion. Accordingly, its marketed form i.e. 26% aqueous solution SDEC may also be classified as skin corrosive, since it exceeds the generic concentration limit of ingredients for skin corrosion that trigger classification of a mixture (>5%), as laid down in CLP Regulation (EC) No 1272/2008. Therefore, a skin sensitization test does not need to be conducted.

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available

Respiratory sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available

Justification for classification or non-classification

Both the anhydrous SDEC and its 26% aqueous solution are proposed for classification as corrosive to the skin due to an alkaline pH. On this basis a skin sentization classification is not needed.