Dimethyl dicarbonate

Dimethyl dicarbonate
Names
	Preferred IUPAC name Dimethyl dicarbonate
	Other names DMDC; Dicarbonic acid dimethyl ester; Dimethyl pyrocarbonate; Velcorin
Identifiers
CAS Number	4525-33-1 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:173546;
ChemSpider	2976 ;
ECHA InfoCard	100.022.601
EC Number	224-859-8;
E number	E242 (preservatives)
PubChem CID	3086;
UNII	1AY9229ZMG ;
CompTox Dashboard (EPA)	DTXSID2052108 ;
	InChI InChI=1S/C4H6O5/c1-7-3(5)9-4(6)8-2/h1-2H3 Key: GZDFHIJNHHMENY-UHFFFAOYSA-N ; InChI=1/C4H6O5/c1-7-3(5)9-4(6)8-2/h1-2H3 Key: GZDFHIJNHHMENY-UHFFFAOYAQ;
	SMILES O=C(OC(=O)OC)OC; O=C(OC)OC(=O)OC;
Properties
Chemical formula	C4H6O5
Molar mass	134.087 g·mol−1
Appearance	Colorless liquid
Density	1.25 g/mL
Melting point	16 to 18 °C (61 to 64 °F; 289 to 291 K)
Boiling point	172 °C (342 °F; 445 K)
Viscosity	2.1 Pa·s (20 °C)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H226, H302, H312, H314, H330
Precautionary statements	P210, P233, P240, P241, P242, P243, P260, P264, P270, P271, P280, P284, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P320, P321, P322, P330, P363, P370+P378, P403+P233, P403+P235, P405, P501
Related compounds
Related compounds	Di-tert-butyl dicarbonate; diethylpyrocarbonate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Dimethyl dicarbonate (DMDC) is a colorless liquid with a pungent odor at high concentration at room temperature. It is primarily used as a beverage preservative, processing aid, or sterilant (INS No. 242) being highly active against typical beverage spoiling microorganisms like yeast, bacteria, or mould.