Ethyltrichlorosilane

Ethyltrichlorosilane Property

Melting point:

−106 °C(lit.)

Boiling point:

99 °C(lit.)

Density 

1.238 g/mL at 25 °C(lit.)

vapor pressure 

36 hPa (20 °C)

refractive index 

n20/D 1.425(lit.)

Flash point:

57 °F

storage temp. 

Store below +30°C.

solubility 

soluble in Ether,Benzene

form 

liquid

Specific Gravity

1.238

color 

colorless

explosive limit

2.68%(V)

Hydrolytic Sensitivity

8: reacts rapidly with moisture, water, protic solvents

Sensitive 

moisture sensitive

InChI

1S/C2H5Cl3Si/c1-2-6(3,4)5/h2H2,1H3

InChIKey

ZOYFEXPFPVDYIS-UHFFFAOYSA-N

SMILES

[Si](Cl)(Cl)(Cl)CC

CAS DataBase Reference

115-21-9(CAS DataBase Reference)

NIST Chemistry Reference

Ethyltrichlorosilane(115-21-9)

EPA Substance Registry System

Trichloroethylsilane (115-21-9)

Safety

Hazard Codes 

F,T+,C

Risk Statements 

11-14-22-26-34-37-35-20/22

Safety Statements 

26-28-36/37/39-45

RIDADR 

UN 1196

WGK Germany 

1

RTECS 

VV4200000

F 

19-21

Autoignition Temperature

385 °C

TSCA 

TSCA listed

HS Code 

2931 90 00

HazardClass 

3

PackingGroup 

II

Storage Class

3 - Flammable liquids

Hazard Classifications

Acute Tox. 3 Inhalation
Acute Tox. 4 Oral
Flam. Liq. 2
Skin Corr. 1A

Hazardous Substances Data

115-21-9(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 1330 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H290May be corrosive to metals

H302Harmful if swallowed

H314Causes severe skin burns and eye damage

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P234Keep only in original container.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

P243Take precautionary measures against static discharge.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P363Wash contaminated clothing before reuse.

P370+P378In case of fire: Use … for extinction.

P390Absorb spillage to prevent material damage.

P403+P235Store in a well-ventilated place. Keep cool.

P405Store locked up.

P406Store in corrosive resistant/… container with a resistant inner liner.

P501Dispose of contents/container to..…

Ethyltrichlorosilane Chemical Properties,Usage,Production

Chemical Properties

Ethyl trichlorosilane is a clear colorless liquid with an irritating odor.

Uses

Intermediate for silicones.

Production Methods

Manufactured by reaction of ethylene and trichlorosilane in the presence of a peroxide catalyst.

General Description

Ethyltrichlorosilane appears as a colorless fuming liquid with a pungent odor. Flash point 57 °F. Boiling point 211.1 °F (99.5 °C). Vapor and liquid may cause burns. Denser than water. Vapors heavier than air.

Reactivity Profile

Chlorosilanes, such as Ethyltrichlorosilane, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases.

Hazard

Flammable, dangerous fire risk, may form explosive mixture with air. A strong irritant.

Health Hazard

Vapor and liquid cause burns. Do not inhale or expose eyes to vapor. Vapor may damage eyes even if not immediately painful.

Fire Hazard

Trichloroethylsilane may form explosive mixtures with air. Its vapors are heavier than air and may travel a considerable distance to a source of ignition and flash back. Form toxic and corrosive fumes including phosgene when heated to decomposition and hydrochloric acid in presence of water. Will react with water or steam to produce heat and toxic and corrosive fumes. Will react vigorously with oxidizing materials. Unstable, avoid decomposing heat.

Flammability and Explosibility

Highly flammable

Safety Profile

Poison by inhalation and intraperitoneal routes. Moderately toxic by ingestion. A skin and severe eye irritant. A very dangerous fire hazard when exposed to heat, flame, or oxidizers; will react with water or steam to produce heat and toxic and corrosive fumes; can react vigorously with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decom position it emits highly toxic fumes of Cl and phosgene. See also CHLOROSILANES.

Potential Exposure

Used in the manufacture of silicone polymers.

Shipping

UN1196 Ethyltrichlorosilane, Hazard Class: 3; Labels: 3-Flammable liquid, 8-Corrosive material.

Incompatibilities

A strong reducing agent. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides. Chlorosilanes react vigorously with bases and both organic and inorganic acids generating toxic and/ or flammable gases. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous hydrogen. Attacks metals in the presence of moisture.