947-42-2
Dihydroxydiphenylsilane
CAS: 947-42-2
Molecular Formula: C12H12O2Si
947-42-2 - Names and Identifiers
| Name | Dihydroxydiphenylsilane |
| Synonyms | diphenyl-silanedio DIPHENYLSILANEDIOL Diphenylsilanediol Silanediol, diphenyl- Dihydroxydiphenylsilane DIHYDROXYDIPHENYLSILANE Diphenyldihydroxysilane Silane, dihydroxydiphenyl- Diphenylsilanediolwhitepowder DIPHENYLSILANEDIOL HIGH PURITY Diphenylsilanediol(Dihydroxydiphenylsilane) |
| CAS | 947-42-2 |
| EINECS | 213-427-4 |
| InChI | InChI=1/C12H12O2Si/c13-15(14,11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10,13-14H |
947-42-2 - Physico-chemical Properties
| Molecular Formula | C12H12O2Si |
| Molar Mass | 216.31 |
| Density | 0.87 |
| Melting Point | 144-147°C |
| Boling Point | 353°C [760mmHg] |
| Flash Point | 129°F |
| Water Solubility | reacts |
| Vapor Presure | 0Pa at 25℃ |
| Vapor Density | >1 (vs air) |
| Appearance | Powder |
| Color | white |
| BRN | 2523445 |
| pKa | 12.06±0.53(Predicted) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Sensitive | Air & Light Sensitive |
| Refractive Index | 1.615 |
| Physical and Chemical Properties | White needle crystal. Melting point 140-141 ℃ (water loss decomposition). |
| Use | Used as silicone rubber structure control agent, raw material of benzyl silicone oil and intermediate of other silicon products |
947-42-2 - Risk and Safety
| Hazard Symbols | F - Flammable |
| Risk Codes | R11 - Highly Flammable R10 - Flammable |
| Safety Description | S16 - Keep away from sources of ignition. S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S37 - Wear suitable gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 1325 4.1/PG 3 |
| WGK Germany | 1 |
| RTECS | VV3640000 |
| TSCA | Yes |
| HS Code | 29319090 |
| Hazard Class | 4.1 |
| Packing Group | III |
947-42-2 - Reference Information
| LogP | 2 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) |
| Application | diphenylsilanediol is a very useful intermediate for the synthesis of organosilicon materials, it is used for the synthesis of octa-phenyl cyclotetrasiloxane, silicon-containing polymers which can be produced directly by condensation reaction as silicone resins or inorganic-organic high molecular silicon polymers have excellent mechanical and thermal properties as well as various special optical properties. Sol-gel polymers synthesized with diphenylsilanediol have been studied to reduce the birefringence of waveguides. Diphenylsilanediol is a surface modifier of white carbon black used earlier, which is characterized by high reaction temperature, long reaction time and selectivity to surface active hydroxyl groups of white carbon black. |
| Use | diphenylsilanediol can be used as a silicone rubber structure control agent to reduce the structure of silicone rubber, it can be used to synthesize phenyl silicone oil, phenyl silicone resin, phenyl silicone rubber and so on. It can also be used as modified intermediates of polyurethane resin, epoxy resin, acrylic resin, PP, PET, PE and so on, endow new products with high and low temperature resistance, radiation resistance, aging resistance and other properties. used as a silicone rubber processing structure control agent. used as experimental reagents and so on used as silicone rubber structure control agent, raw material of benzyl silicone oil and intermediate of other silicon products used as silicone rubber structure control agent, raw materials of benzyl silicone oil and intermediates of other silicon products |
| production method | obtained by hydrolysis of diphenyldichlorosilane. |
Last Update：2024-04-10 22:29:15
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