681-84-5
Product Name:
Tetramethyl orthosilicate
Formula:
C4H12O4Si
Synonyms:
Tetramethoxysilane;Tetramethyl orthosilicate
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Methyl orthosilicate appears as a clear colorless liquid. Flash point below 125 °F. Less dense than water and insoluble in water. Very toxic by ingestion and inhalation and very irritating to skin and eyes. Used to make paints and lacquers. |
|---|---|
| Color/Form | Colorless liquid |
| Boiling Point | 250 °F at 760 mmHg (NIOSH, 2023) |
| Melting Point | 28 °F (NIOSH, 2023) |
| Flash Point | 205 °F (NIOSH, 2023) |
| Solubility | Soluble (NIOSH, 2023) |
| Density | 1.02 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Density | Relative vapor density (air = 1): 5.3 |
| Vapor Pressure | 12 mmHg at 77 °F (NIOSH, 2023) |
| Stability/Shelf Life | VOLATILE |
| Decomposition | When heated to decomposition, it emits acrid smoke and irritating fumes. |
| Viscosity | 0.5 cP |
| Heat of Vaporization | 46.5 kJ/mol |
| Refractive Index | Index of refraction: 1.3683 at 20 °C |
| Kovats Retention Index | 668 668.2 |
| Other Experimental Properties | Hydrolyzes in water after 2 days |
| Chemical Classes | Metals -> Metalloid Compounds (Silicon) |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H226:Flammable liquids H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation H330:Acute toxicity,inhalation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
COMPUTED DESCRIPTORS
| Molecular Weight | 152.22 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 4 |
| Exact Mass | 152.05048539 g/mol |
| Monoisotopic Mass | 152.05048539 g/mol |
| Topological Polar Surface Area | 36.9 Ų |
| Heavy Atom Count | 9 |
| Formal Charge | 0 |
| Complexity | 55.5 |
| 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
Methyl orthosilicate appears as a clear colorless liquid. Flash point below 125 °F. Less dense than water and insoluble in water. Very toxic by ingestion and inhalation and very irritating to skin and eyes. Used to make paints and lacquers.
RELATED SUPPLIERS
Rivashaa Agrotech Biopharma Pvt. Ltd.
1Y
product:681-84-5 / 12002-26-5 Tetramethyl orthosilicate 98%