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Physical & Chemical properties

Dissociation constant

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Description of key information

Key value for chemical safety assessment

pKa at 20°C:
1.6

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.