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- Chemical Name: TMOS
CAS No.: 681-84-5
Molecular Fomula: C4H12O4Si
Molecular weight: 152.22
Appearance: colorless liquidSample: Available
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Description of TMOS
Tetramethyl orthosilicate is the chemical compound with the formula Si(OCH3)4. This molecule consists of four methyl groups attached to the hypothetical anion SiO44−. The basic properties are similar to the more popular tetraethyl orthosilicate, which is usually preferred because the product of hydrolysis, ethanol, is less toxic than methanol.
Tetramethyl orthosilicate hydrolyzes to SiO2:
Si(OCH3)4 + 2 H2O → SiO2 + 4 CH3OH
In organic synthesis, Si(OCH3)4 has been used to convert ketones and aldehydes to the corresponding ketals and acetals, respectively.
Basic Info of TL190
Basic Info
Numbering system
Properties
Safety Info
Basic Info
| Chemical Name | Tetramethyl orthosilicate |
| CAS No. | 681-84-5 |
| Molecular Formula | C4H12O4Si |
| Molecular Weight | 152.22100 |
| PSA | 36.92000 |
| LogP | 0.00760 |
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Numbering system
| MDL number | MFCD00008341 |
Properties
| Appearance & Physical State | colourless liquid |
| Density | 1.023 |
| Boiling Point | 121-122ºC |
| Melting Point | -2ºC |
| Flash Point | 26ºC |
| Refractive Index | 1.367-1.37 |
| Water Solubility | hydrolysis |
| Storage Condition | Flammables area |
| Vapor Density | 5.25 (vs air) |
| Vapor Pressure | 3.35 psi ( 20 °C) |
Safety Info
| RTECS | VV9800000 |
| Hazard Class | 6.1 |
| Safety Statements | S16-S26-S28-S36/37/39-S45 |
| HS Code | 29209085 |
| WGK Germany | 3 |
| Packing Group | I |
| RIDADR | UN 2606 6.1/PG 1 |
| Risk Statements | R10; R26; R37/38; R41 |
| Hazard Codes | T+ |
| Signal Word | Danger |
| Symbol | GHS02, GHS05, GHS06 |
| Hazard Declaration | H226; H315; H318; H330 |
| Caution Statement | P210; P260; P280; P304 + P340 + P310; P305 + P351 + P338 + P310; P370 + P378 |
What is TL190?
- With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is TMOS which has developed particularly rapidly in recent years. Do you know about TMOS?
- The official answer: Tetramethyl silicate is a colourless and transparent liquid. It has a special odor. It is unstable in the presence of moisture and can gradually decompose silicon oxide in the air. Miscible with organic solvents, insoluble in water. Flammable. Toxic. Corrosive. It is one of the dangerous chemicals.
What’s the application of TL190?
Methyl orthosilicate can be used in the production of heat- and chemical-resistant coatings, silicone solvents and adhesives for precision casting, etc. It is also a widely used intermediate in organic synthesis..
Conclusion
Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates including more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive System, Santi-tumor, Nervous System, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.
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