CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Tetramethylsilane appears as a colorless, mildly acidic volatile liquid. A serious fire hazard. Mildly toxic by ingestion. Emits acrid smoke and fumes when heated to high temperatures. Less dense than water and insoluble in water, but soluble in most organic solvents. Used as an aviation fuel and as an internal standard for nmr analytical instruments. |
|---|---|
| Color/Form | Volatile liquid or gas |
| Boiling Point | 26.6 °C |
| Melting Point | -99.06 °C |
| Flash Point | -27 dec C (closed cup) |
| Solubility | Insoluble in cold concentrated sulfuric acid; soluble in most organic solvents |
| Density | 0.641 g/cu cm at 25 °C |
| Vapor Pressure | 718.0 [mmHg] |
| LogP | log Kow = 3.24 |
| Decomposition | When heated to decomposition it emits acrid smoke and irritating fumes. |
| Heat of Vaporization | 5785.1 cal/mol |
| Refractive Index | Index of refraction = 1.3587 at 20 °C/D |
| Kovats Retention Index | 428.6 433 438.1 |
| Other Experimental Properties | Density = 0.6688 g/cu cm at 20 °C; 0.636 g/cu cm at boiling point; MP: -102.12 °C (alpha form); -99.04 °C (beta form) |
| Chemical Classes | Metals -> Metalloid Compounds (Silicon) |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H224:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P403+P233:Store in a well-ventilated place. Keep container tightly closed. |
COMPUTED DESCRIPTORS
| Molecular Weight | 88.22 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 88.070826917 g/mol |
| Monoisotopic Mass | 88.070826917 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 19.1 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Tetramethylsilane appears as a colorless, mildly acidic volatile liquid. A serious fire hazard. Mildly toxic by ingestion. Emits acrid smoke and fumes when heated to high temperatures. Less dense than water and insoluble in water, but soluble in most organic solvents. Used as an aviation fuel and as an internal standard for nmr analytical instruments.