Pyrocarbonic Acid Diethyl Ester
Title: Pyrocarbonic Acid Diethyl Ester
CAS Registry Number: 1609-47-8
CAS Name: Dicarbonic acid diethyl ester
Additional Names: oxydiformic acid diethyl ester; diethyl pyrocarbonate; diethyl oxydiformate; DEPC
Manufacturers' Codes: Ue-5908
Trademarks: Baycovin
Molecular Formula: C6H10O5
Molecular Weight: 162.14
Percent Composition: C 44.45%, H 6.22%, O 49.34%
Line Formula: C2H5OOCOCOOC2H5
Literature References: Prepd according to the equation R1OOCCl + NaOCOOR2 ® R1OOCOCOOR2 + NaCl: Kovalenko, Zh. Obshch. Khim. 22, 1546 (1952); Thoma, Rinke, Ann. 624, 30 (1959); alternate method: Degering et al., J. Am. Pharm. Assoc. Sci. Ed. 39, 626 (1950). Review: Handbook of Food Additives, T. A. Furia, Ed. (Chemical Rubber Co., Cleveland, 1968) pp 181-185.
Properties: Viscous liquid. Fruity odor. d420 1.12. Viscosity at 20° = 1.97 cP. Soluble in alcohols, esters, ketones, hydrocarbons. A 50% w/w soln in ethanol may be prepd. Slowly sol in water with hydrolytic decompn yielding ethanol and CO2.
Density: d420 1.12
CAUTION: Concd DEPC is irritating to eyes, mucous membranes and skin.
Use: Gentle esterifying agent. Preservative for wines, soft drinks, fruit juices.

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