1,3-Divinyltetramethyldisilazane
1,3-Divinyltetramethyldisilazane
CAS: 7691-02-3
Molecular Formula: C8H19NSi2
1,3-Divinyltetramethyldisilazane - Names and Identifiers
1,3-Divinyltetramethyldisilazane - Physico-chemical Properties
| Molecular Formula | C8H19NSi2 |
| Molar Mass | 185.41 |
| Density | 0.819 |
| Melting Point | <0°C |
| Boling Point | 161-163°C |
| Flash Point | 34°C |
| Water Solubility | Hydrolyzes in water. |
| Solubility | soluble in Methanol |
| Vapor Presure | 1.2-8611hPa at 20-25℃ |
| Appearance | clear liquid |
| Specific Gravity | 0.819 |
| Color | Colorless to Light yellow to Light orange |
| BRN | 2411661 |
| pKa | 10.77±0.70(Predicted) |
| Storage Condition | 2-8°C |
| Sensitive | 7: reacts slowly with moisture/water |
| Refractive Index | n20/D 1.4405(lit.) |
| MDL | MFCD00042846 |
1,3-Divinyltetramethyldisilazane - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R10 - Flammable R34 - Causes burns R22 - Harmful if swallowed |
| 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S23 - Do not breathe vapour. |
| UN IDs | UN 2920 8/PG 2 |
| WGK Germany | 3 |
| RTECS | VV1302250 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29319090 |
| Hazard Class | 8 |
| Packing Group | II |
1,3-Divinyltetramethyldisilazane - Reference Information
| LogP | 0.23-1.5 at 20℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | 1,1,3, 3-tetramethyl-1, 3-divinyldisilazane is a hydrocarbon derivative in the form of a colorless and transparent liquid, and can be used in the manufacture of silicone rubber, silicone resin colloid and vinyl silicone resin. |
| Application | 1,1,3, 3-tetramethyl-1, 3-divinyl disilazane is a colorless transparent liquid, is a kind of active silane coupling agent, mainly used for liquid silicone rubber products in the surface treatment of fumed silica; Can also be used for coating additives, polymer modifiers, synthetic intermediates for pharmaceuticals and agrochemicals. |
| preparation | 2mol of dimethylvinylchlorosilane was added to the reaction vessel, and ammonia gas was introduced into the reaction vessel for reaction, the amount of ammonia is controlled to the molar ratio of dimethylvinylchlorosilane to ammonia 2:3.4, 99% is introduced within 2 hours, A, the reaction pressure is controlled to 5kg NH3 pressure, and the reaction is carried out at 130 ℃, reaction time is 6H, after the end of the reaction, add dichloroethane dissolution product; B, add the above product to the total amount of 0.05% of the product quality of hydroquinone, tert-butyl catechol and copper naphthenate, at a temperature of 160-163 ℃, molecular distillation was performed at 760mm Hg to obtain a colorless transparent liquid. The product content was 98.95% and the yield was 98%. The density of the product was 0.819g/cm3 and the content of 0,1,1,3, 3-tetramethyl-1, 3-divinyldisilazane was 0.1% for ammonium chloride. |
| Use | can be used in the manufacture of silicone rubber, silicone colloid and vinyl silicone. As an adhesion promoter for negative photoresist. |
Last Update：2024-04-09 20:45:29
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