Vinymethyltrimethoxysilane
Silane,ethenyltrimethoxy
CAS: 2768-02-7
Molecular Formula: C5H12O3Si
Vinymethyltrimethoxysilane - Names and Identifiers
| Name | Silane,ethenyltrimethoxy |
| Synonyms | VTMO TRIMETHOXYVINYLSILANE VINYLTRIMETHOXYSILANE Vinyltrimethoxysilane Ethenyltrimethoxysilan ETHENYLTRIMETHOXYSILAN Ethenyltrimethoxysilane Trimethoxy(vinyl)silane Vinyl teimethoxy silane (trimethoxysilyl)ethene Silane,ethenyltrimethoxy Trimethoxysilyl)ethylene (TRIMETHOXYSILYL)ETHYLENE Vinymethyltrimethoxysilane Silane Coupling Agent A-171 DOW CORNING(R) PRODUCT Q9-6300 Tri-Methoxy Vinyl Silane (Vtmos) (Vinyltrimethoxy Silane ) |
| CAS | 2768-02-7 |
| EINECS | 220-449-8 |
| InChI | InChI=1/C5H12O3Si/c1-5-9(6-2,7-3)8-4/h5H,1H2,2-4H3 |
| InChIKey | NKSJNEHGWDZZQF-UHFFFAOYSA-N |
Vinymethyltrimethoxysilane - Physico-chemical Properties
| Molecular Formula | C5H12O3Si |
| Molar Mass | 148.23 |
| Density | 0.968 g/mL at 25 °C (lit.) |
| Boling Point | 123 °C (lit.) |
| Flash Point | 73°F |
| Water Solubility | slightly soluble |
| Vapor Presure | 88 hPa (55 °C) |
| Appearance | liquid |
| Specific Gravity | 0.970 |
| Color | Colorless to Almost colorless |
| BRN | 1099136 |
| Storage Condition | Store below +30°C. |
| Sensitive | 7: reacts slowly with moisture/water |
| Explosive Limit | 1.1%(V) |
| Refractive Index | n20/D 1.392(lit.) |
| Physical and Chemical Properties | Density 0.9718 boiling point 123°C refractive index 1.3915-1.3935 flash point 22°C water-soluble soda solution |
| Use | As a cross-linking agent for cross-linked polyethylene |
Vinymethyltrimethoxysilane - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R20 - Harmful by inhalation |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S37/39 - Wear suitable gloves and eye/face protection S16 - Keep away from sources of ignition. |
| UN IDs | UN 1993 3/PG 2 |
| WGK Germany | 1 |
| RTECS | VV6770000 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29310095 |
| Hazard Class | 3 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 7120 mg/kg LD50 dermal Rabbit 3259 mg/kg |
Vinymethyltrimethoxysilane - Upstream Downstream Industry
Vinymethyltrimethoxysilane - Synthetic Methods
Open Data Unverified Data
method 1
The reaction of Vinyltrichlorosilane with methanol, neutralization of the crude product, and rectification to obtain the finished product.
method 2
acetylene and trimethoxyhydrosilane were added under platinum catalyst, and the crude product was distilled to obtain the final product.
Last Update：2024-01-02 23:10:35
Vinymethyltrimethoxysilane - Characteristics performance
Open Data Unverified Data
A colorless transparent liquid with an ester taste is slowly hydrolyzed with water to form the corresponding silanol. Soluble in methanol, ethanol, isopropanol, toluene, acetone and other organic solvents. This product is a general-purpose organic silane coupling agent, mainly used as polyethylene crosslinking agent; Glass fiber surface treatment agent; Synthetic special coatings; Surface moisture treatment of electronic components; Surface treatment of inorganic silicon filler.
Last Update：2022-01-01 08:51:20
Vinymethyltrimethoxysilane - Technical indicators
Open Data Unverified Data
- Appearance: colorless transparent liquid
- purity (%):≥ 98 (by gas chromatography)
- Specific Gravity: 0.955-965
- refractive index: 1.391-1.393
- acid content (%):<0.05
Last Update：2022-01-01 08:51:21
Vinymethyltrimethoxysilane - Practical use
Open Data Unverified Data
- used in the manufacture of polyethylene cross-linking wire, cable insulation and covering material this product is an important cross-linking agent for cross-linked polyethylene. Compared with the general peroxide cross-linking and radiation cross-linking, the cross-linking process has the advantages of simple equipment, less investment, easy to control, used in polyethylene density range is wide, suitable for the production of special shape of the fan-shaped wire core, and has the characteristics of high extrusion speed. Due to the excellent electrical properties, good heat resistance and stress cracking resistance of silane cross-linked polyethylene, this product is widely used in the manufacture of electric wires, insulation and sheath materials.
- used in the manufacture of heat-resistant polyethylene cross-linked pipes, hoses and films. The cross-linked polyethylene prepared by using this product as a cross-linking agent has good aromatic hydrocarbon resistance, oil resistance, stress cracking resistance and high mechanical strength, good heat resistance and other advantages, can be used at 80 deg C for 50 years. It can be used for the anti-corrosion and thermal insulation outer protective layer of long-distance oil pipeline, natural gas and gas pipeline and the anti-corrosion and thermal insulation sleeve joint material matched with it; It can be used for the water pipe and hot water pipeline of civil residence. This product can also be used for ethylene-vinyl acetate copolymer, chlorinated polyethylene, ethylene-ethyl acrylate copolymer crosslinking agent.
- is used to impregnate glass fibers and inorganic silicon-containing fillers to improve the infiltration and adhesion of resin and glass fibers, thus effectively improving the mechanical strength and electrical properties of glass fiber reinforced plastic and plastic laminated products, in particular, wet mechanical strength and electrical properties. It also significantly improves the weather resistance, water resistance and heat resistance of the glass fiber reinforced plastic, and prolongs the service life of the product. In addition, a better electromagnetic wave transmission property is imparted to the product.
- for the production of special coatings this product can be copolymerized with a series of acrylic monomers, made of special exterior wall coatings, known as silicone acrylic exterior wall coatings. The coating has many characteristics, such as weather resistance, dust resistance, scrub and so on. Can be used for 20 years.
- for the preparation of special purpose modified polymer this product can be copolymerized with a variety of monomers (such as: ethylene, propylene, butylene, etc.), or with the corresponding resin Graft polymerization, made of special purpose modified polymer.
- composite adhesion promoter this product is a good adhesion promoter of silicone rubber with metal, fabric and other materials.
Last Update：2022-01-01 08:51:22
Vinymethyltrimethoxysilane - Storage
Open Data Unverified Data
store in a cool, ventilated, dry warehouse below 30 ° C, and prohibit direct sun exposure. The original container was not opened and the storage period was stable for 1 year.
Last Update：2022-01-01 08:51:22
Vinymethyltrimethoxysilane - Reference Information
| LogP | -2--0.82 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | vinyltrimethoxysilane is a colorless and transparent liquid, soluble in various organic solvents, insoluble in water with PH = 7, but soluble in water with PH = 3.0-3.5. |
| Application | Vinyl trimethoxysilane is suitable for polyethylene and copolymers with various complex shapes and all densities, suitable for larger processing process tolerance, Filling composite materials, etc., with high use temperature, excellent pressure cracking resistance, memory resistance, wear resistance and impact resistance. It has the functions of coupling agent and crosslinking agent. The suitable polymer types include polyethylene, polypropylene, unsaturated polyester, etc. It can also be used to improve the affinity between glass fiber, inorganic filler and resin that reacts to vinyl. Commonly used in silane crosslinked polyethylene cables and pipes. |
| use | as RTV one-component silicone rubber crosslinking agent, (alcohol type), used in polymers (such as PE) as crosslinking agent. Treat various fibers, plastics and inorganic fillers as coupling agents. Used as cross-linking agent for cross-linked polyethylene Used as glass fiber treatment agent |
| spontaneous combustion temperature | 235°C |
Last Update：2024-04-10 22:29:15
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Raw Materials for Vinymethyltrimethoxysilane