Title: Tartronic Acid
CAS Registry Number: 80-69-3
CAS Name: Hydroxypropanedioic acid
Additional Names: hydroxymalonic acid
Molecular Formula: C3H4O5
Molecular Weight: 120.06
Percent Composition: C 30.01%, H 3.36%, O 66.63%
Line Formula: HOCH(COOH)2
Literature References: Prepd by ozonization of malonic acid in aq soln: Dobinson, Chem. Ind. (London) 1959, 853.
Properties: Colorless, odorless crystals. Crystallizes from water with ½ and 1H2O. Becomes anhydr at 60°. Sublimes 110-120°. mp 158-160° with decompn (CO2 evolved). pK1 2.42; pK2 4.54, Grandjean, Bull. Soc. R. Sci. Liege 38, 288 (1969), C.A. 72, 42684t (1970). Very sol in water, alcohol; the anhydrous acid is sol in ether.
Melting point: mp 158-160° with decompn (CO2 evolved)
pKa: pK1 2.42; pK2 4.54, Grandjean, Bull. Soc. R. Sci. Liege 38, 288 (1969), C.A. 72, 42684t (1970) |