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Ethyltrichlorosilane

CAS No.
115-21-9
Chemical Name:
Ethyltrichlorosilane
Synonyms
TRICHLOROETHYLSILANE;CE6350;C2H5SiCl3;trichloroethyl-silan;ethyltrichloro-silan;ETHYLTRICHLOROSILANE;trichloroethylsilicon;trichloroethyl-silican;ethyl(trichloro)-silan;TRICHLOROETHYLSILICANE
CBNumber:
CB1852886
Molecular Formula:
C2H5Cl3Si
Molecular Weight:
163.51
MDL Number:
MFCD00000485
MOL File:
115-21-9.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-27 23:48:13

Ethyltrichlorosilane Properties

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)
EWG's Food Scores 1
FDA UNII 6Q81CH0W5Z
NIST Chemistry Reference Ethyltrichlorosilane(115-21-9)
EPA Substance Registry System Trichloroethylsilane (115-21-9)
UNSPSC Code 12352103
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Corrosion (GHS05)Exclamation Mark (GHS07)
GHS02,GHS05,GHS07
Signal word  Danger
Hazard statements  H302-H314-H225-H290
Precautionary statements  P501-P270-P240-P210-P233-P234-P243-P241-P242-P264-P280-P370+P378-P390-P303+P361+P353-P301+P330+P331-P363-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P403+P235-P406-P405
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
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
REACH Registrations Active
Excepted Quantities Not Permitted as Excepted Quantity
NFPA 704
3
3 2
W

Ethyltrichlorosilane price More Price(7)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.21667 Trichloroethylsilane for synthesis 115-21-9 25mL $173 2026-04-30 Buy
TCI Chemical E0188 Ethyltrichlorosilane >98.0%(GC)(T) 115-21-9 25g $28 2026-04-30 Buy
TCI Chemical E0188 Ethyltrichlorosilane >98.0%(GC)(T) 115-21-9 500g $243 2023-06-20 Buy
Strem Chemicals 93-1411 Ethyltrichlorosilane, 98% 98% 115-21-9 100g $97 2026-04-30 Buy
Strem Chemicals 93-1411 Ethyltrichlorosilane, 98% 98% 115-21-9 500g $384 2026-04-30 Buy
Product number Packaging Price Buy
8.21667 25mL $173 Buy
E0188 25g $28 Buy
E0188 500g $243 Buy
93-1411 100g $97 Buy
93-1411 500g $384 Buy

Ethyltrichlorosilane Chemical Properties,Uses,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.

Ethyltrichlorosilane Preparation Products And Raw materials

Global( 97)Suppliers
Supplier Tel Email Country ProdList Advantage
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Shandong Xiya Chemical Co., Ltd 13355009207 13355009207 3007715519@qq.com China 18722 57
Syntechem Co.,Ltd info@syntechem.com China 12973 57
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 452520369 sales@maya-r.com China 11693 57
T&W GROUP 021-61551611 13296011611 contact@trustwe.com China 9884 58
Thermo Fisher Scientific 800-810-5118 cnchemical@thermofisher.com China 17752 75
TOKYO CHEMICAL INDUSTRY CO., LTD. 03-36680489 Sales-JP@TCIchemicals.com Japan 28364 80

View Lastest Price from Ethyltrichlorosilane manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Ethyltrichlorosilane pictures 2020-01-09 Ethyltrichlorosilane
115-21-9
$9.80 1g ≥99% 100kg Career Henan Chemical Co
Ethyl silicon trichloride ethyl(trichloro)-silan ethylsilicontrichloride ethyltrichloro-silan Silane, ethyltrichloro- Silane, trichloroethyl- Silicane, trichloroethyl- trichloroethyl-silan trichloroethyl-silican trichloroethylsilicon Trichloroethylsilane for synthesis TRICHLOROETHYLSILICANE C2H5SiCl3 CE6350 Ethyltrichlorosilane,98% dow corning product z-1212 ETHYLTRICHLOROSILANE, 98+%, DEPOSITION & Trichloroethylsilane: (Ethyl trichlorosilane) Dow Corning(R) product Z-1212, Trichloro(ethyl)silane Ethyltrichlorosilane,95% Ethyltrichlorosilane, AcroSeal, 99% Ethyltrichlorosilane, 99%, AcroSeal ETHYLTRICHLOROSILANE ETHYL SILICONE TRICHLORIDE Ethyltrichlorosilane> Ethyltrichlorosilanerosilane Ethyltrichlorosilane, ≥ 98.0% TRICHLOROETHYLSILANE 115-21-9 C2H5Cl3Si Cl3C2H5Si Trichlorosilanes Silane Coupling Agents Si-Cl Compounds Si (Classes of Silicon Compounds) Silane Coupling Agents (Intermediates) Protecting and Derivatizing Reagents Protection and Derivatization Silicon-Based Synthetic Reagents organosilicon compounds Functional Materials Si (Classes of Silicon Compounds) Si-Cl Compounds Silane Coupling Agents Silane Coupling Agents (Intermediates) Trichlorosilanes