Rubeanic Acid
Title: Rubeanic Acid
CAS Registry Number: 79-40-3
CAS Name: Ethanedithioamide
Additional Names: dithiooxamide
Molecular Formula: C2H4N2S2
Molecular Weight: 120.20
Percent Composition: C 19.98%, H 3.35%, N 23.31%, S 53.35%
Line Formula: NH2CSCSNH2
Literature References: Review of rubeanic acid and derivs as chelating ligands and analytical reagents: Ray, Xavier, J. Indian Chem. Soc. 38, 535 (1961).
Properties: Red crystals or cryst powder; dec ~200°. Slightly sol in water; sol in alcohols. Insol in ether.
Use: As a reagent for copper, cobalt, and nickel. As a stabilizer of ascorbic acid solns: Smoczkiewicz, Grochmalicka, Nature 192, 16 (1961).

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