English 
English  |
| CAS NO. | 616-38-6 |
| Alias | DMC |
| Molecular Formula | C3H6O3 |
| Appearance | Clear,colorless liquid |
| ASSAY | 99%Min |
| UN NO. | 1161 |
| HazardClass | 3 |
| PackingGroup | II |
| Package | 24MT/ISO TANK；200KG/drum;（16MT/FCL） |
| ITEMS | SPECIFICATION |
| Dimethyl carbonate w/% | ≥99.9 |
| Methanol w/% | ≤0.020 |
| Moisture w/% | ≤0.020 |
| Density(20℃) g/cm3 | 1.066-1.076 |
| Appearance | Clear,colorless liquid |
| Colouring(Hazen) | 10 max |
| 1. From methyl chloroformate ([79-22-1]) and methanol reaction. The raw material used in the reaction is methyl chloroformate, which is obtained by the reaction of methanol and phosgene. During preparation, this photogasification product can also be synthesized by reflow reaction of adding excessive methanol without separation. This reaction is called the traditional phosgene process. 2. Transesterification method by transesterification of vinyl carbonate or Propylene carbonate with methanol, dimethyl carbonate can be prepared. This method has high yield, low corrosion and mild reaction conditions, but the source of raw materials is restricted by the development of petrochemical industry and the element utilization rate is low. Dimethyl carbonate can be synthesized directly from methanol, carbon monoxide and oxygen over a catalyst. This method has the advantages of cheap raw material, low toxicity and simple technology, which is the most promising method. According to the process conditions, it can be divided into liquid phase method and gas phase method, and gas phase method can be divided into one-step method and two-step method. Among them, methanol liquid phase oxidation carbonylation and gas phase oxidation carbonylation of two steps has been industrialized, while methanol gas phase oxidation carbonylation of one step is still under development. 4. Methanol and CO2 reaction synthesis method. This process route is still under development. 5. Methanol and urea reaction synthesis method. This process route is still under development. | ||||
| Dimethyl carbonate can replace traditional toxic raw materials such as phosgene, dimethyl sulfate and methyl chloride. It can be used for non-phosgene synthesis of polycarbonate, diphenyl carbonate, isocyanate and allyl diethylene glycol carbonate; Used for the synthesis of various carbamate pesticides, such as ceverine, etc. Organic synthesis intermediates Chemicalbook, such as anisole, dimethyl ether, alkyl arylamine, symmetric diaminourea, hydrazyl formate, etc. In pharmaceutical industry, it can be used to produce aminoxazolidone, ciprofloxacin, β -ketone carboxylic acid ester pharmaceutical intermediates, etc. In addition, it can also be used as gasoline, diesel additives, refrigerating machine oil and solvent. | |||
| CAS NO. | 616-38-6 |
| Alias | DMC |
| Molecular Formula | C3H6O3 |
| Appearance | Clear,colorless liquid |
| ASSAY | 99%Min |
| UN NO. | 1161 |
| HazardClass | 3 |
| PackingGroup | II |
| Package | 24MT/ISO TANK；200KG/drum;（16MT/FCL） |
| ITEMS | SPECIFICATION |
| Dimethyl carbonate w/% | ≥99.9 |
| Methanol w/% | ≤0.020 |
| Moisture w/% | ≤0.020 |
| Density(20℃) g/cm3 | 1.066-1.076 |
| Appearance | Clear,colorless liquid |
| Colouring(Hazen) | 10 max |
| 1. From methyl chloroformate ([79-22-1]) and methanol reaction. The raw material used in the reaction is methyl chloroformate, which is obtained by the reaction of methanol and phosgene. During preparation, this photogasification product can also be synthesized by reflow reaction of adding excessive methanol without separation. This reaction is called the traditional phosgene process. 2. Transesterification method by transesterification of vinyl carbonate or Propylene carbonate with methanol, dimethyl carbonate can be prepared. This method has high yield, low corrosion and mild reaction conditions, but the source of raw materials is restricted by the development of petrochemical industry and the element utilization rate is low. Dimethyl carbonate can be synthesized directly from methanol, carbon monoxide and oxygen over a catalyst. This method has the advantages of cheap raw material, low toxicity and simple technology, which is the most promising method. According to the process conditions, it can be divided into liquid phase method and gas phase method, and gas phase method can be divided into one-step method and two-step method. Among them, methanol liquid phase oxidation carbonylation and gas phase oxidation carbonylation of two steps has been industrialized, while methanol gas phase oxidation carbonylation of one step is still under development. 4. Methanol and CO2 reaction synthesis method. This process route is still under development. 5. Methanol and urea reaction synthesis method. This process route is still under development. | ||||
| Dimethyl carbonate can replace traditional toxic raw materials such as phosgene, dimethyl sulfate and methyl chloride. It can be used for non-phosgene synthesis of polycarbonate, diphenyl carbonate, isocyanate and allyl diethylene glycol carbonate; Used for the synthesis of various carbamate pesticides, such as ceverine, etc. Organic synthesis intermediates Chemicalbook, such as anisole, dimethyl ether, alkyl arylamine, symmetric diaminourea, hydrazyl formate, etc. In pharmaceutical industry, it can be used to produce aminoxazolidone, ciprofloxacin, β -ketone carboxylic acid ester pharmaceutical intermediates, etc. In addition, it can also be used as gasoline, diesel additives, refrigerating machine oil and solvent. | |||
