Chemical Formula	C4H6O4
Molecular Weight	118.09
Structural Formula
Density	1.148 g/mL at 25 °C (lit.)
Melting Point	50-54 °C (lit.)
Boiling Point	163.5 °C (lit.)
Flash Point	167°F
Water Solubility	60 G/L (25 oC)
Vapor Pressure	3 hPa (20 °C)
Solubility	Ethanol: 50mg/mL soluble, clear to slightly turbid, colorless
Refractive Index	n20/D 1.39(lit.)
PH Value	1 (60g/l, H2O, 20℃)
Storage Conditions	Store below +30°C.
Stability	Stable. Combustible. Incompatible with strong oxidizing agents, acids, bases, reducing agents.
Appearance	Crystalline solid
Specific Gravity	1.148
Color	Colorless to white
Merck	14,6106
BRN	1071744
Physicochemical Properties	Colorless monoclinic crystals. Melting point 54℃, boiling point 163.5℃, relative density 1.1479 (54℃), refractive index 1.379 (82.1℃), flash point 75℃. Soluble in alcohol and ether, soluble in about 17 parts of water, decomposes in hot water.

Main Uses: As an important chemical and pharmaceutical raw material, dimethyl oxalate is often used to prepare various organic solvents, extractants, adhesives, plasticizers, and various pharmaceutical intermediates, such as for the synthesis of Vitamin B13, hydrogenation to prepare methyl glycolate and ethylene glycol, and replacing diethyl oxalate to synthesize sulfamethoxazole, etc.;

Using dimethyl oxalate as a raw material to produce methyl ethyl oxalate and diethyl oxalate; using dimethyl oxalate to replace diethyl oxalate as the starting material, without changing the rest of the production process and raw materials, through multiple steps such as Claisen condensation, acidification, cyclization, and ammonolysis to produce 5-methyl-3-formylisoxazole, and testing and analyzing the obtained product, it was found that there was no difference in product quality; meanwhile, because the price of dimethyl oxalate is lower than that of diethyl oxalate, the production cost of the product is reduced, improving its competitiveness in the market;

Dimethyl oxalate can also react with ammonia to generate oxamide, which can be used as a stabilizer for nitrocellulose products, and as a gas generating agent and cooling agent in gas generators; meanwhile, oxamide can also be used as a slow-release nitrogen fertilizer, etc.