75-77-4
Product Name:
Chlorotrimethylsilane
Formula:
C3H9ClSi
Synonyms:
TMSCl;Chlorotrimethylsilane;Trimethylsilyl chloride;TMCS;Trimethylchlorosilane
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Trimethylchlorosilane appears as a colorless fuming liquid with a pungent odor. Boiling point 135 °F, Flash point -18 °F. Density 0.854 g / cm3. The vapor and liquid may cause burns. Vapors are heavier than air. |
|---|---|
| Color/Form | Colorless liquid |
| Odor | SHARP, HYDROCHLORIC ACID-LIKE ODOR; ACRID. |
| Boiling Point | 135 °F at 760 mmHg (EPA, 1998) |
| Melting Point | -72 °F (EPA, 1998) |
| Flash Point | 0 °F (EPA, 1998) |
| Solubility | Decomposes (NTP, 1992) |
| Density | 0.854 at 77 °F (EPA, 1998) - Less dense than water; will float |
| Vapor Density | 3.7 (EPA, 1998) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 608 mmHg at 68 °F ; 40 mmHg at 11.5 °F; 100 mmHg at 42.8 °F (NTP, 1992) |
| Autoignition Temperature | 743 °F (USCG, 1999) |
| Decomposition | ... /Trimethylchlorosilane/ decomposes on heating producing toxic and corrosive fumes including hydrogen chloride, phosgene. |
| Heat of Vaporization | 126 BTU/LB |
| Refractive Index | Index of refraction = 1.3870 at 25 °C/D |
| Kovats Retention Index | 552 555 552.4 553 560 560 560 |
| Other Experimental Properties | Readily hydrolyzed with liberation of hydrochloric acid |
| Chemical Classes | Toxic Gases & Vapors -> Chlorosilanes |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H225:Flammable liquids H312:Acute toxicity,dermal H314:Skin corrosion/irritation |
| 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 | 108.64 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 108.0162045 g/mol |
| Monoisotopic Mass | 108.0162045 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 28.4 |
| 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
Trimethylchlorosilane (Chlorotrimethylsilane) is a colourless fuming liquid with a pungent odour. Boiling point 135 °F, Flash point -18 °F. Density 0.854 g / cm3. The vapor and liquid may cause burns. Vapors are heavier than air. Chlorotrimethylsilane is a chemical compound that can be used to functionalize the surface of polydimethylsiloxane (PDMS) in order to improve its hydrophilicity and biocompatibility.