Hexamethyldisilane
- CAS No.
- 1450-14-2
- Chemical Name:
- Hexamethyldisilane
- Synonyms
- HMD;1,1,1,2,2,2-Hexamethyldisilane;DK545;CH7280;CFS-142;(CH3)6Si2;DISILANE M6;Permethyldisilane;HEXAMETHYLDISILANE;hexamethyl-disilan
- CBNumber:
- CB4476113
- Molecular Formula:
- C6H18Si2
- Molecular Weight:
- 146.38
- MOL File:
- 1450-14-2.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/4/23 13:52:06
| Melting point | 9-12 °C (lit.) |
|---|---|
| Boiling point | 112-114 °C (lit.) |
| Density | 0.715 g/mL at 25 °C (lit.) |
| refractive index |
n |
| Flash point | 29 °F |
| storage temp. | Store at <= 20°C. |
| solubility | sol common organic solvents; insol H2O. |
| form | liquid |
| Specific Gravity | 0.729 |
| color | colorless |
| Water Solubility | Insoluble in water. Soluble in alcohol, ether and acetone. |
| Hydrolytic Sensitivity | 1: no significant reaction with aqueous systems |
| BRN | 1633463 |
| Stability | Volatile |
| InChIKey | NEXSMEBSBIABKL-UHFFFAOYSA-N |
| CAS DataBase Reference | 1450-14-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Disilane, hexamethyl-(1450-14-2) |
| EPA Substance Registry System | Disilane, hexamethyl- (1450-14-2) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H317-H319-H335 | |||||||||
| Precautionary statements | P210-P280-P302+P352-P305+P351+P338 | |||||||||
| Hazard Codes | F,Xi | |||||||||
| Risk Statements | 11-36/37-43-36/37/38 | |||||||||
| Safety Statements | 16-23-45-9-33-26-7/9 | |||||||||
| RIDADR | UN 1993 3/PG 2 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | JM9170000 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29310095 | |||||||||
| Toxicity | LD50 orally in Rabbit: 2160 mg/kg LD50 dermal Rabbit 2160 mg/kg | |||||||||
| NFPA 704 |
|
Hexamethyldisilane price More Price(9)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 8.18889 | Hexamethyldisilane for synthesis | 1450-14-2 | 10ML | ₹4930 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 217069 | Hexamethyldisilane 98% | 1450-14-2 | 5G | ₹2110.88 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.18889 | Hexamethyldisilane for synthesis | 1450-14-2 | 50ML | ₹16870 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 217069 | Hexamethyldisilane 98% | 1450-14-2 | 10G | ₹3399.05 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 217069 | Hexamethyldisilane 98% | 1450-14-2 | 50G | ₹11561.1 | 2022-06-14 | Buy |
Hexamethyldisilane Chemical Properties,Uses,Production
Chemical Properties
Colorless clear liquid
Uses
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.
Application
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.
Preparation
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.
Fire Hazard
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.]
Hexamethyldisilane Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| JSK Chemicals | +919879767970 | Gujarat, India | 3756 | 58 | Inquiry |
| CHEMSWORTH | +91-261-2397244 | New Delhi, India | 6707 | 30 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6160 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| Chemcon Speciality Chemical Private Limited | 08066085761Ext 641 | Vadodara, India | 6 | 58 | Inquiry |
| SSS Enterprises | 07942531831 | Hyderabad, India | 29 | 58 | Inquiry |
| Chemcon Speciality Chemicals Private Limited | +91 265 2512088 | Gujarat, India | 5 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| JSK Chemicals | 58 |
| CHEMSWORTH | 30 |
| Otto Chemie Pvt. Ltd. | 58 |
| Alfa Aesar | 58 |
| Central Drug House(P) Ltd. | 58 |
| A.J Chemicals | 58 |
| CLEARSYNTH LABS LTD. | 58 |
| Chemcon Speciality Chemical Private Limited | 58 |
| SSS Enterprises | 58 |
| Chemcon Speciality Chemicals Private Limited | 58 |
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