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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Dissociation constant

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

pKa at 20°C:

Additional information

The high water solubility and ionic character identify sodium ethyl xanthate(CAS# 140-90-9) as a dissociable compound. Ethyl xanthic acid is a moderately strong acid with a reported pKaabout 1.6, from which a pKbof 12.4 may be estimated for its conjugate base. Aqueous solution of xanthetes are alkaline, reflecting the hydrolytic formation of caustic soda.