Dimethyl carbonate
Molecular formula: C3H6O3
Structural formula:
Relative Molecular weight: 90.08
Class：3.2
CAS No.: 616-38-6
UN No.: 1161
Specifications:
| Item |
Index |
| Top class |
First class |
| Appearance |
Colorless & transparent liquid |
Colorless & transparent liquid |
| Content, % |
≥99.9 |
≥99.5 |
| Moisture, % |
≤0.02 |
≤0.1 |
| Methanol, % |
≤0.02 |
≤0.1 |
| Acidity, % |
≤0.015 |
≤0.015 |
| Free chlorine, % |
≤0.01 |
≤0.01 |
| Color,（APHA） |
≤5 |
≤10 |
Packing:
Packed in galvanized iron drums, net weight 200Kg/drum; or in ISO tank. Also can be packed according to the clients' requirement.
Storage and transportation:
Dimethyl Carbonate is combustible. If coming into contact with oxidization, it will burn. It should be stored in a cool and windy special warehouse far from fire and transported as a combustible chemical product.
Applications of DMC:
PC: DMC can be used to compound PC.
Pharmacy: DMC is mainly used to compose antibiotics, fever-reliever and painkiller, vitamin and central nervous system depressants & stimulants.
Pesticide: DMC is mainly used to produce methyl isocyanate and further produce some amino formic acid medicine, etc.
Substitute: DMC can produce phenyl methyl ether by taking the place of dimethyl sulphate, and manufacture TMAH in place of chloromethane.
DMC can produce ADC and Toluene diisocyanate by taking the place of toxic phosgene.
Other fields：DMC can also be used in other fields such as solvent, dye and electrolyte, etc.
Physical properties:
| Appearance |
Normal atmospheric temperature,
water-like volatile liquid |
| Scent |
Light sweet smell |
| Density(d420) |
1.073 |
| Melting point |
4℃ |
| Boiling point |
90.1℃(0.1MPa) |
| Solution |
Minutely soluble in water but mixed with some organic solvent such as ether, alcohol and ketone, etc. |
| Flash point |
21.7℃(open) 16.7℃(close) |
| Index of refraction |
n20D =1.3687 |
| Heat of combustion |
3452kcal/kg |
| Solution in water of combustion |
12.6wt% |
| Water solution of combustion |
2.9wt% |
| RON |
110 |
| MON |
97 |
| Viscosity |
0.664mPa.s |
| Critical pressure |
4.57MPa |
| Critical temperature |
539.0k |
| Vaporization latent heat |
8382kJ/kmol |
| Dielectric constant |
3.1c/v.m |
| Wistar |
LD50=6400—12800mg/kg |
Some boiling point, Solubility Parameters, Relative Evaporation Rate between DMC and other organic solvent.
| Solvent |
boiling point /℃ |
Solubility |
Relative volatility |
| Acetone |
56.5 |
10 |
7.2 |
| Butanone |
79.57 |
9.3 |
4.65 |
| Ethyl acetate |
77.15 |
9 |
5.3 |
| Butyl acetate |
126.5 |
8.5 |
1 |
| Toluene |
110.6 |
8.9 |
1.95 |
| Xylene |
135-145 |
8.8 |
0.68 |
| Dimethyl Carbonate |
90.2 |
9.9 |
3.4 |
Dimethyl Carbonate, as a green organic solvent with advanced performance, can substitute toluene, xylene, ethyl acetate, butyl acetate, acetone or butanone to produce environmental coating, adhesive and printing ink, etc.
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