What kind of material is silicone DMC and what kind of chemical material is DMC

Silicone DMC is dimethyl carbonate.

An organic compound. It is a chemical raw material with low toxicity, excellent environmental performance and wide use, and is an important intermediate in organic synthesis, with carbonyl groups in its molecular structure.

Functional groups such as methyl and methoxy groups have a variety of reaction properties, and have the characteristics of safe use, convenient use, less pollution, and easy transportation in production.

DMC has excellent solubility properties, narrow melting and boiling point range, large surface tension, low viscosity, small dielectric constant at the dielectric boundary, high evaporation temperature and fast evaporation rate, so it can be used as a low-toxicity solvent in the coating industry and pharmaceutical industry. It can be seen that DMC is not only less toxic, but also has the characteristics of high flash point, low vapor pressure and high lower limit in air, so it is a green solvent that combines cleanliness and safety.

Phosgene. Although the reactivity is high, its highly toxic and highly corrosive by-products make it face huge environmental pressure, so it will be gradually eliminated; DMC has a similar nucleophilic reaction center, and when the carbonyl group of DMC is attacked by nucleophilicity, the acyl-oxygen bond is broken to form carbonyl compounds, and the by-product is methanol.

Therefore, DMC can replace phosgene as a safe reaction reagent for the synthesis of carbonic acid derivatives.

DMC stands for dimethyl carbonate.

It is an organic compound that can be regarded as a dimethyl ester of carbonic acid. Dimethyl carbonate is a chemical raw material with excellent environmental performance and a wide range of uses. It is an important intermediate in organic synthesis, with functional groups such as carbonyl, methyl group and methoxy group in its molecular structure, which has a variety of reaction properties, and has the characteristics of safe use, convenient use, less pollution and easy transportation in production.

Dimethyl carbonate is less toxic and is a promising "green" chemical product.

Dimethyl carbonate is an important organic chemical intermediate, because its molecular structure contains carbonyl, methyl, methoxy and carbonyl methoxy, so it can be widely used in carbonylation, methylation, methoxyation and carbonyl methylation and other organic synthesis reactions, for the production of polycarbonate, isocyanate, polyurethane, polycarbonate glycol, allyl diglycol carbonate, methylaminocarbamate (carbaryl), anisole ether, tetramethylammonium methyl alcohol, long-chain alkyl carbonate, carbohydrazide, malonate, propylene diurethane, Diethyl carbonate, triphosgene, furazolidone, methyl hydrazine, methyl aniline carbamate and other chemical products. Because DMC is non-toxic, it can be used as a methylating agent or carbonylating agent instead of highly toxic phosgene, methyl chloroformate, dimethyl sulfate, etc., which can effectively improve the safety of production operations and reduce environmental pollution.

DMC is dimethyl carbonate. DMC is dimethyl carbonate. Dimethyl carbonate (DMC) is a non-toxic, excellent environmental performance, widely used chemical raw materials, it is an important organic synthesis intermediate, the molecular structure contains carbonyl, methyl and methoxy and other functional groups, with a variety of reaction properties, in the production has the characteristics of safety, convenience, less pollution, easy transportation.

DMC Physicochemical Properties:1. Character: colorless liquid, aromatic odor.

2. Melting point ( ).

3. Boiling point ( ) 90 91.

4. Relative density (water = 1): .

5. Relative vapor density (air = 1): .

6. Saturation vapor pressure:.

7. Critical temperature ( ).

8. Critical pressure (MPa):

9. Octanol water partition coefficient: .

10. Flash point ( ) 17 (oc).

11. **Upper limit (%)

12. **Lower limit (%)

13. Solubility: insoluble in water, miscible in most organic solvents, miscible in acids and alkalis.

14. Critical density (g·cm-3): .

15. Critical volume (cm3·mol-1): 252.

16. Critical compression factor:

Dimethylcyclosiloxane mixture.

The primary form of dimethylcyclic siloxane is a lack of organic and inorganic compounds directly connected to organic groups with dimethyldichlorosilane as the main raw material and hydrolysis, with silicon-oxygen (Si-O) bonds as the main chain and directly linked to organic groups on silicon atoms. It is the main intermediate of silicone.

The primary form of dimethylcyclic siloxane is mainly used for ring-opening polymerization into silicone oil, silicone rubber and silicone resin with different degrees of polymerization. These polymers are further processed into products that are widely used in various fields such as construction, electronics, textiles, automobiles, personal protection, food, mechanical processing, etc., and there are also a small number of direct applications.

Because silicone resin has the characteristics of liquid, it is easy to wipe evenly on the **, and it has a silk-like touch when applied on the **, and has the property of moisturizing. There are also silicones that can promote wound healing and improve the appearance of scars.

Silicone DMC is dimethyl carbonate, an organic compound. It is a kind of chemical raw material with low toxicity, excellent environmental protection performance and wide use, and is an important intermediate in organic synthesis, with functional groups such as carbonyl, methyl and methoxy groups in the molecular structure, and a variety of reactive properties of oak, which has the characteristics of safety, convenience, less pollution and easy transportation in production. <

Silicone DMC is dimethyl carbonate, a compound with a rapid opening machine. It is a kind of chemical raw material with low toxicity, excellent environmental protection performance, such as years, widely used, is an important organic synthesis intermediate, the molecular structure contains carbonyl, methyl and methoxy and other functional groups, with a variety of reaction properties, in the production has the characteristics of safety, convenience, less pollution, easy transportation, etc.

BMC (DMC) material is the abbreviation of BULK (Dough) molding compounds, translated into Chinese are referred to as bulk molding compounds, BMC and DMC are actually the main components of the two are the same, but the industry is different, the region is different and the name is different, the United Kingdom is the first country to adopt the DMC abbreviation, in Europe DMC is more popular, on the contrary, BMC abbreviation is more popular in Yanchang United States, according to the definition of the US SPI;

BMC material is chemically thickened DMC, which also shows that DMC material has a long history, China began to introduce British technology, DMC abbreviation in China, especially in the electrical industry awareness is still relatively high, like JB T7770-1995 standard also uses DMC abbreviation, but now the international development tends to BMC abbreviation. The abbreviation BMC is used more frequently than DMC.

The main raw material of bulk molding compound (DMC) is a pellet prepreg made of GF (chopped glass fiber), UP (unsaturated resin), MD (filler) and various additives. DMC materials were first applied in the former West Germany and British coarse socks in the 60s of the twentieth century, and then in the 70s and 80s in the United States and Japan respectively.

Because BMC bulk molding compound has excellent electrical properties, mechanical properties, heat resistance, chemical corrosion resistance, and adapts to various molding processes, it can meet the performance requirements of various products, so it is more and more popular with the majority of users.

DMC is dimethyl carbonate. Dimethyl carbonate (DMC), is an organic compound, is a low toxicity, excellent environmental performance, widely used chemical raw materials, is an important organic synthesis intermediate, the molecular structure contains carbonyl, methyl and methoxy and other functional groups, with a variety of reaction properties, in the production has the characteristics of safety, convenience, less pollution, easy transportation.

Instead of phosgene as carbonylating agent, although phosgene has high reactivity, its highly toxic and highly corrosive by-products make it face huge environmental pressure, so it will be gradually eliminated; DMC has a similar nucleophilic reaction center, and when the carbonyl group of DMC is attacked by nucleophilic attack, the acyl-oxygen bond is broken to form carbonyl compounds, and the by-product is methanol.

Therefore, DMC can replace phosgene as a safe reaction reagent to synthesize carbonic acid derivatives, such as carbamate pesticides, polycarbonate, isocyanates, etc., of which polycarbonate will be the most demanded area of DMC, according to the forecast in 2005, more than 80% of DMC will be used to produce polycarbonate.

Chemical data for dimethyl carbonateNumber of hydrogen bond donors: 0.

Number of hydrogen bond acceptors: 3.

Number of rotatable chemical bonds: 2.

Number of tautomers: 0.

Topological Molecular Polar Surface Area:.

Number of heavy atoms: 6.

Surface charge: 0.

Complexity: 44.

Number of isotope atoms: 0.

Determine the number of atomic stereocenters: 0.

Number of indeterminate atomic stereocenters: 0.

Determine the number of chemical bond stereocenters: 0.

Number of indeterminate chemical bond stereocenters: 0.

Number of covalent bond units: 1.

Molar refractive index:.

Molar volume (cm3 mol):.

Isotonic specific volume (:.

Surface tension (dyne cm): .

Polarizability (10-24cm3): .

The above content refers to Encyclopedia - Dimethyl carbonate.

Hello, we are happy to answer for you, in the paint industry, it can be used as a matting agent. Silicone oil is also a good anti-rust additive and lubricant. Therefore, silicone oil is widely used in the manufacture of various metal surface treatment agents and advanced lubricants.

Silicone oil also has a special function: it can be used in this messenger rubber with anti-wear properties, and it has excellent temperature resistance, which is suitable for different types of rubber products that work under harsh conditions. Silicone oil has strong resistance to many inorganic chemicals such as alkalis, acids, alkali salts, etc.; Silicone oil does not react when it comes into contact with many substances, so it can be used to protect some precision instruments in a certain position.

Silicone oil can also be used in the food industry, where silicone oil is often used as a release agent, mainly for isolation.