헥사메틸디실란
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헥사메틸디실란 속성
- 녹는점
- 9-12 °C (lit.)
- 끓는 점
- 112-114 °C (lit.)
- 밀도
- 0.715 g/mL at 25 °C (lit.)
- 굴절률
- n
20/D 1.422(lit.)
- 인화점
- 29 °F
- 저장 조건
- Store at <= 20°C.
- 용해도
- 일반적인 유기 용매에 용해되며 H2O에는 불용성입니다.
- 물리적 상태
- 액체
- Specific Gravity
- 0.729
- 색상
- 무색의
- 수용성
- 물에 불용성. 알코올, 에테르, 아세톤에 용해됩니다.
- Hydrolytic Sensitivity
- 1: no significant reaction with aqueous systems
- BRN
- 1633463
- 안정성
- 휘발성 물질
- InChIKey
- NEXSMEBSBIABKL-UHFFFAOYSA-N
- CAS 데이터베이스
- 1450-14-2(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | F,Xi | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 11-36/37-43-36/37/38 | ||
| 안전지침서 | 16-23-45-9-33-26-7/9 | ||
| 유엔번호(UN No.) | UN 1993 3/PG 2 | ||
| WGK 독일 | 2 | ||
| RTECS 번호 | JM9170000 | ||
| TSCA | Yes | ||
| 위험 등급 | 3 | ||
| 포장분류 | II | ||
| HS 번호 | 29310095 | ||
| 독성 | LD50 orally in Rabbit: 2160 mg/kg LD50 dermal Rabbit 2160 mg/kg |
헥사메틸디실란 C화학적 특성, 용도, 생산
화학적 성질
Colorless clear liquid용도
Hexamethyldisilane acts as a silylating reagent for allylic acetates, aryl halides and diketones. It is a source material for vapor deposition during silicon carbide growth. It is also used in electronic and semiconducter industries.주요 응용
Hexamethyldisilane is an important silane protective agent, which can synthesize sodium trimethylsilane, potassium trimethylsilane and lithium trimethylsilane.Preparation of iodotrimethylsilane.
Used as trimethylsilane anion reagent.
silylating or reducing reagent in combination with a Pd catalyst or a nucleophile.
Replaces aromatic nitriles with TMS groups in presence of [RhCl(cod)]2.
Precursor for CVD of silicon carbide.
Brings about the homocoupling of arenesulfonyl chlorides in the presence of Pd2(dba)3.
Used as a solvent for the direct borylation of fluoroaromatics.
Reacts with alkynes to form siloles.
Undergoes the silylation of acid chlorides to give acylsilanes.
제조 방법
Hexamethyldisilane is produced by the reaction of methyl Grignard reagent with methylchlorodisilanes. This reaction is normally conducted in the presence of an ether such as diethyl ether, ethyl propyl ether, THF and the like.화재위험
Hexamethyldisilazane (HMDZ) is a highly flammable liquid and vapour.HMDZ liquid is lighter than water and may float on water, spreading material during fire fighting. Leaking material or fire runoff to sewer may create fire or explosion hazard.
HMDZ vapours are heavier than air and can accumulate to form explosive concentrations. The vapours may also spread a considerable distance to a source of ignition, and flash back towards the source.
HMDZ reacts with water to form ammonia.
HMDZ is a non-conductor and, therefore, can accumulate static electrical charges when processed, handled or dispensed. HMDZ's flash point is 52 to 53°F, closed cup, for "pure" material.
Purification Methods
The most likely impurity is trimethylchlorosilane (cf boiling point). Wash it with H2O, cold conc H2SO4, H2O again, then aqueous NaHCO3, dry over CaSO4 and fractionate at atmospheric pressure. [Brown & Fowles J Chem Soc 2811 1958.] A grossly impure sample (25% impurities) was purified by repeated spinning band distillation. This lowered the impurity level to 500ppm. The main impurity was identified as 1-hydroxypentamethyldisilane. [Beilstein 4 IV 4277.]헥사메틸디실란 준비 용품 및 원자재
원자재
준비 용품
헥사메틸디실란 공급 업체
글로벌( 348)공급 업체
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| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 |
sales@chemdad.com | China | 39894 | 58 |