The acid dissociation constants of 2,3-quinoxalinedithiol.
Sodium salts of 2,3-quinoxalinedithiol have been prepared and used for determination of the acid ionization constants by potentiometric titration. The fully protonated form of the reagent was used in an alternative determination of the first ionization constant by a solubility method. The constants are pK(2), == 6.84 +/- 0.04 and pK(2) = 9.95 +/- 0.03.
Dalziel
J A
JA
Department of Chemistry Chelsea College of Science and Technology Manresa Road, London, S.W.3., England.
Slawinski
A K
AK