Butyric Anhydride

Title: Butyric Anhydride
CAS Registry Number: 106-31-0
CAS Name: Butanoic acid anhydride
Additional Names: butyryl oxide
Molecular Formula: C8H14O3
Molecular Weight: 158.19
Percent Composition: C 60.74%, H 8.92%, O 30.34%
Line Formula: CH3CH2CH2COOCOCH2CH2CH3
Literature References: Prepn from butyric acid: Williams, Krynitsky, Org. Synth. coll. vol. III, 165 (1955); Kuwajima, Mukaiyama, J. Org. Chem. 29, 1385 (1964). Manuf by catalytic hydrogenation of crotonic acid: Smith, Hunter, US 2492403 (1949 to Celanese); by catalytic carbonylation of the corresponding acid ester: Reppe, Friederich, US 2730546 (1956 to BASF).
Properties: Liq, bp 199.4-201.4°. mp -75°. d420 0.9668. nD20 1.4070. Flash pt, open cup: 190°F (88°C). Sol in water and in alc with decompn; sol in ether.
Melting point: mp -75°
Boiling point: bp 199.4-201.4°
Flash point: Flash pt, open cup: 190°F (88°C)
Index of refraction: nD20 1.4070
Density: d420 0.9668
Butyroin Butyrolactone Butyronitrile Buzepide Cabenegrins