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CAS RN: 681-84-5 | 产品编码: T0588
Tetramethyl Orthosilicate
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技术规格
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(GC) | min. 99.0 % |
物性（参考值）
| 熔点 | -4 °C |
| 沸点 | 122 °C |
| 闪点 | 29 °C |
| 比重 | 1.03 |
| 折射率 | 1.37 |
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H330 : Fatal if inhaled. H315 : Causes skin irritation. H318 : Causes serious eye damage. H371 : May cause damage to organs. H372 : Causes damage to organs through prolonged or repeated exposure. H373 : May cause damage to organs through prolonged or repeated exposure. H226 : Flammable liquid and vapor. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray. P270 : Do not eat, drink or smoke when using this product. P240 : Ground/bond container and receiving equipment. P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking. P233 : Keep container tightly closed. P243 : Take precautionary measures against static discharge. P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment. P242 : Use only non-sparking tools. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P284 : Wear respiratory protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P308 + P311 : IF exposed or concerned: Call a POISON CENTER/doctor. P362 + P364 : Take off contaminated clothing and wash it before reuse. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P403 + P233 : Store in a well-ventilated place. Keep container tightly closed. P403 + P235 : Store in a well-ventilated place. Keep cool. P405 : Store locked up. |
相关法规
| RTECS# | VV9800000 |
运输信息
| UN编号 | UN2606 |
| 类别 | 6.1 / 3 |
| 包装类别 | I |
| 航空运输 | Forbidden for Air Transport |
| HS编码* | 2920.90-000 |
应用
Tetramethyl Orthosilicate (TMOS) as a Direct Amidation Reagent
4-Methylbenzylamine (274 mg, 2 mmol), benzoic acid (244 mg, 2 mmol), toluene (9.4 mL) and tetramethylorthosilicate (592 μL, 4 mmol) are charged into flask. This mixture is purged under nitrogen after the mixture is heated to reflux. After the reaction has completed, the volatiles are removed in vacuo. THF (10 mL) is added. Aqueous K2CO3 solution (0.3 M, 30 mL, 9 mmol) is added, then solid NaCl is added until saturation is observed. The aqueous phase is extracted with THF, and the combined organic layers are dried over sodium sulfate, filtered and concentrated in vacuo to afford the N-(4-methylbenzyl)benzamide (441 mg, 98% yield) as a colorless solid.
References
- Tetramethyl Orthosilicate (TMOS) as a Reagent of Direct Amidation of Carboxylic Acids
参考文献
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