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CAS RN: 107-46-0 | 产品编码: H0091
Hexamethyldisiloxane
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技术规格
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(GC) | min. 98.0 % |
物性（参考值）
| 沸点 | 100 °C |
| 闪点 | -6 °C |
| 比重 | 0.76 |
| 折射率 | 1.38 |
| 水溶性 | 不溶 |
| 溶解性（可溶于） | 醇 |
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H400 : Very toxic to aquatic life. H411 : Toxic to aquatic life with long lasting effects. H225 : Highly flammable liquid and vapor. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P273 : Avoid release to the environment. P240 : Ground and bond container and receiving equipment. P210 : Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 : Keep container tightly closed. P243 : Take action to prevent static discharges. P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment. P242 : Use non-sparking tools. P280 : Wear protective gloves/ eye protection/ face protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P391 : Collect spillage. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. P403 + P235 : Store in a well-ventilated place. Keep cool. |
相关法规
| RTECS# | JM9237000 |
运输信息
| UN编号 | UN1993 |
| 类别 | 3 |
| 包装类别 | II |
| HS编码* | 2931.90-000 |
应用
Trimethylsilylating Reagent
Typical Procedure (Entry 1):
In a 100 mL flask equipped with a Dean-Stark trap are placed hexanoic acid (17.5 g, 151 mmol), hexamethyldisiloxane (48.7 g, 301 mmol), sulfuric acid (1.5 g, 15 mmol), and toluene (40 mL). The flask is then heated to gentle reflux, and the course of the reaction is monitored by GLC. After 72 h, the reaction mixture is distilled under reduced pressure to give trimethylsilyl hexanoate (20.2 g, Y. 71%) as a colorless liquid.
In a 100 mL flask equipped with a Dean-Stark trap are placed hexanoic acid (17.5 g, 151 mmol), hexamethyldisiloxane (48.7 g, 301 mmol), sulfuric acid (1.5 g, 15 mmol), and toluene (40 mL). The flask is then heated to gentle reflux, and the course of the reaction is monitored by GLC. After 72 h, the reaction mixture is distilled under reduced pressure to give trimethylsilyl hexanoate (20.2 g, Y. 71%) as a colorless liquid.
References
- 1) A facile silylation of carboxylic acids with hexamethyldisiloxane
- 2) A new preparation of trimethylsilyl ethers
参考文献