| Title:  Ketipic Acid CAS Registry Number:  533-76-6 CAS Name:  3,4-Dioxohexanedioic acid Additional Names:  2,3-diketoadipic acid;  oxalodiacetic acid Molecular Formula:  C6H6O6 Molecular Weight:  174.11 Percent Composition:  C 41.39%, H 3.47%, O 55.14% Literature References:  Prepn:  Fittig et al., Ann. 249, 182 (1888); Stachel, Arch. Pharm. 295, 735 (1932); 296, 479 (1963).  Structure studies; occurs in the solid form as the g-lactol:  Stachel, Ann. 689, 118 (1965). Properties:  Dec at 150° forming diacetyl.  Sparingly sol in ether.  Sol in glacial acetic acid, concd hydrochloric acid.  Practically insol in water, alc, chloroform, CS2, benzene, petr ether.   Derivative Type:  Diethyl ester  Molecular Formula:  C10H14O6 Molecular Weight:  230.21 Percent Composition:  C 52.17%, H 6.13%, O 41.70% Properties:  Prisms from alcohol, mp 83°.  bp30 230°.  Soluble in ether, chloroform. Melting point:  mp 83° Boiling point:  bp30 230°   |