双三甲硅基乙炔
Bis(trimethylsilyl)acetylene
CAS: 14630-40-1
Molecular Formula: C8H18Si2
双三甲硅基乙炔 - Names and Identifiers
| Name | Bis(trimethylsilyl)acetylene |
| Synonyms | BSTMA BTMSA ICLA-002 TIMTEC-BB SBB008997 BIS(TRIMETHYLSILYL)ACETYLENE Bis(trimethylsilyl)acetylene 1,2-Bis(trimethylsilyl)ethyne 1,2-BIS-TRIMETHYLSILANYL-ETHYNE 1,2-Bis(trimethylsilyl)acetylene ethyne-1,2-diylbis(trimethylsilane) Silane, 1,2-ethynediylbis[trimethyl- 2,5-Disilahex-3-yne, 2,2,5,5-tetramethyl- |
| CAS | 14630-40-1 |
| EINECS | 238-671-9 |
| InChI | InChI=1/C8H18Si2/c1-9(2,3)7-8-10(4,5)6/h1-6H3 |
| InChIKey | ZDWYFWIBTZJGOR-UHFFFAOYSA-N |
双三甲硅基乙炔 - Physico-chemical Properties
| Molecular Formula | C8H18Si2 |
| Molar Mass | 170.4 |
| Density | 0.752g/mLat 25°C(lit.) |
| Melting Point | 21-24°C(lit.) |
| Boling Point | 136-137°C(lit.) |
| Flash Point | 29 °C |
| Water Solubility | MAY DECOMPOSE |
| Vapor Presure | 9.9mmHg at 25°C |
| Appearance | liquid |
| Specific Gravity | 0.770 |
| Color | colorless |
| BRN | 906870 |
| Storage Condition | 2-8°C |
| Sensitive | 2: reacts with aqueous acid |
| Refractive Index | n20/D 1.427(lit.) |
双三甲硅基乙炔 - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R10 - Flammable |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1993 3/PG 2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10 |
| TSCA | Yes |
| HS Code | 29310095 |
| Hazard Class | 3 |
| Packing Group | III |
双三甲硅基乙炔 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | bis (trimethylsilyl) acetylene can be used as a silicon-based protecting group for the use of the 1,3-bipolar cycloaddition synthesis of pyrazole, a substrate for nickel-catalyzed coupling reactions with benzonitrile. silicon-based protecting group, organic synthesis. |
| synthetic method | bis (trimethylsilyl) acetylene can be synthesized by the following steps: 1 with two metal salts of acetylene and trimethylhalosilane as raw materials, the molar mass ratio of two metal salts of acetylene and trimethylhalosilane is 1:2.0~1:2.2, first, the dimetal acetylene salt is suspended in toluene, then trimethylhalosilane is added dropwise, then the temperature is raised to 50~60 ℃ for 2 hours, the two metal salts of acetylene are disodium acetylene or lithium diacetylene; 2 the reaction is terminated with water, extracted, dried, concentrated under reduced pressure, and distilled under reduced pressure to obtain ditrimethylsilyl acetylene with a purity of more than 99%, the yield was more than 90%. |
Last Update：2024-04-10 22:29:15
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双三甲硅基乙炔
FMOC-N-(1-BOC-4-哌啶基)甘氨酸
单硬脂酸甘油酯,精制
6-甲基吡啶-3-甲酸乙酯
1-(2-吡啶-2-基乙基)哌嗪
异硫氰酸荧光素
NITROSYLHEXAFLUOROANTIMONATE
2-氯-5-甲基苯甲醛
3-氯-4-甲基苯甲酸
三甲基硅杂氧化锑
FMOC-N-(1-BOC-4-哌啶基)甘氨酸
单硬脂酸甘油酯,精制
6-甲基吡啶-3-甲酸乙酯
1-(2-吡啶-2-基乙基)哌嗪
异硫氰酸荧光素
NITROSYLHEXAFLUOROANTIMONATE
2-氯-5-甲基苯甲醛
3-氯-4-甲基苯甲酸
三甲基硅杂氧化锑