1594. Butyric Anhydride

Nomenclature

CAS number: 106-31-0
Butanoic acid 1,1′-anhydride; butyryl oxide.
C8H14O3; mol wt 158.19.
C 60.74%, H 8.92%, O 30.34%.

Description and 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).

Chemical structure

Properties

Liq, bp 199.4-201.4°. mp -75°. d420 0.9668. nD20 1.4070. Flash pt, open cup: 190°F (88°C). Corrosive. Sol in water and in alc with decompn; sol in ether.