75-78-5
Product Name:
Dichlorodimethylsilane
Formula:
C2H6Cl2Si
Synonyms:
Dichlorodimethylsilane;Dimethyldichlorosilane;DMDCS;Sylon CT;Silane M2
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Dimethyldichlorosilane appears as a colorless fuming liquid with a pungent odor. Flash point 16 °F. Vapor and liquid may cause burns. Denser than water. Vapors heavier than air. |
|---|---|
| Color/Form | Colorless liquid |
| Odor | SHARP, LIKE HYDROCHLORIC ACID |
| Boiling Point | 158 °F at 760 mmHg (EPA, 1998) |
| Melting Point | -123 °F (EPA, 1998) |
| Flash Point | 16 °F (EPA, 1998) |
| Solubility | Decomposes in water and ethanol |
| Density | 1.1 (EPA, 1998) - Denser than water; will sink |
| Vapor Density | 4.45 (EPA, 1998) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 100 mmHg at 63.5 °F (EPA, 1998) |
| Autoignition Temperature | 750 °F (USCG, 1999) |
| Decomposition | When heated to decomposition it emits toxic fumes of /hydrogen chloride/. |
| Corrosivity | Corrosive |
| Heat of Vaporization | 100 BTU/LB = 58 CAL/G = 2.4X10+5 JOULE/KG |
| Surface Tension | 20.1 DYNES/CM = 0.0201 N/M at 20 °C |
| Refractive Index | Index of refraction: 1.4038 at 30 °C |
| Kovats Retention Index | 593 606 596.1 598 |
| Other Experimental Properties | Reacts with water to form complex mixture of dimethylsiloxanes, and liberates hydrogen chloride. |
| Chemical Classes | Toxic Gases & Vapors -> Chlorosilanes |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H304:Aspiration hazard H314:Skin corrosion/irritation H336:Specific target organ toxicity,single exposure; Narcotic effects H373:Specific target organ toxicity, repeated exposure H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. 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 | 129.06 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 127.9615821 g/mol |
| Monoisotopic Mass | 127.9615821 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 30.6 |
| 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
Dimethyldichlorosilane appears as a colorless fuming liquid with a pungent odor. Flash point 16 °F. Vapor and liquid may cause burns. Denser than water. Vapors heavier than air.