115-21-9

Usage

Uses

Used in Chemical Industry:
Ethyltrichlorosilane is used as an intermediate for the production of silicones due to its chemical properties and reactivity with other compounds. Its ability to form stable bonds with silicon makes it a valuable component in the synthesis of various silicone products.
Used in Silicone Production:
Ethyltrichlorosilane is used as a key component in the manufacturing process of silicones for its ability to react with other elements and form stable silicone compounds. These silicones find applications in a wide range of industries, including automotive, construction, electronics, and personal care products, due to their unique properties such as heat resistance, flexibility, and water repellency.

Production Methods

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

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

Highlyflammable

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.

InChI:InChI=1/C2H5Cl3Si/c1-2-6(3,4)5/h2H2,1H3

Upstream product

• 74-96-4 ethyl bromide 
• 74-84-0 ethane 
• 74-85-1 ethene 
• 75-00-3 chloroethane 
• 811-49-4 ethyllithium 
• 925-90-6 ethylmagnesium bromide 
• 78-07-9 ethyltriethoxy silane 
• 98-88-4 benzoyl chloride 
• 75-94-5 trichlorovinylsilane 
• 67-64-1 acetone 
• 78-10-4 tetraethoxy orthosilicate 
• 2386-64-3 ethylmagnesium chloride 
• 7446-70-0 aluminium trichloride 
• 1789-58-8 ethyldichlorosilane 

Downstream Products

• 110-56-5 1,4-dichlorobutane 
• 5314-55-6 ethyltrimethoxysilane 
• 18420-17-2 1,3-diethyl-1,1,3,3-tetramethoxy-disiloxane 
• 78-07-9 ethyltriethoxy silane 
• 994-63-8 Ethyl-tripropylsilan 
• 17689-77-9 ethyl-tris(ethanoyloxy)silane 
• 18030-66-5 3-ethyl-1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]trisiloxane 
• 76-86-8 Triphenylsilyl chloride 
• 18407-41-5 chloro(ethyl)(diphenyl)silane 
• 1125-27-5 dichloro(ethyl)phenylsilane 
• 75-79-6 Methyltrichlorosilane 
• 353-89-9 ethyltrifluorosilane 
• 1789-58-8 ethyldichlorosilane 
• 6233-20-1 trichloro(2-chloroethyl)silane 

Related news

The thermolysis of Ethyltrichlorosilane (cas 115-21-9) and ethyltrimethylsilane08/23/2019

The thermal decompositions of ethyltrichloro-and ethyltrimethyl-silane have been studied in the gas phase at 823K. The main primary process in each case is the dehydrosilylation reaction X3SiCH2CH3 → X3SiH+CH2 = CH2 (X = Cl or Me), though several additional products are formed, mainly in second...detailed

Vibrational energy transfer of chemisorbed Ethyltrichlorosilane (cas 115-21-9) at the glass/air interface08/22/2019

Chemisorbed films of ethyltrichlorosilane (ETS) at the glass/air interface are studied by IR-excitation sum-frequency (SF) spectroscopy. Using two independently tunable infrared pulses in combination with a visible upconversion pulse for the SF-probing process, a time-resolved vibrational spectr...detailed

Relevant academic research and scientific papers

Kinetics of Gas Phase Addition Reactions of Trichlorosilyl Radicals. IV. Relative Rates of Additions to 1-Alkenes

Trichlorosilyl radical additions to a mixture of ethene, propene, 1-butene, and 1-pentene and to a mixture of propene and 2-methylpropene have been investigated.The rate of adduct formation from each olefin was obtained relative to that from propene between 403 K and 548 K.These relative rates are in good agreement with those calculated from the rate parameters obtained previously in this laboratory.

Kinetics of Gas Phase Addition Reactions of Trichlorosilyl Radicals. VIII. Reinvestigation of Addition to Ethylene

The addition of SiCl3 radicals to ethylene has been reinvestigated using a large conversion method.The amended values are log(k3/k5) = -0.17 +/- 0.05 - (0.80 +/- 0.10) kcal mol-1/2.303 RT and log -5/k6 (mol cm-3)> = 3.4 +/- 0.3 - (22.5 +/- 0.7) kcal mol-1/2.303 RT where the reactions involved are radical-SiCl3 + CH3COCH3 (CH3)2-radical-COSiCl3, radical-SiCl3 + C2H4 radical-CH2CH2SiCl3 and radical-CH2CH2SiCl3 + HSiCl3 C2H5SiCl3 + radical-SiCl3.

A novel catalyst containing a platinum complex in polyethylene glycol medium supported on silica gel for vapor-phase hydrosilylation of acetylene with trichlorosilane or trimethoxysilane

Hydrosilylation of acetylene with trichlorosilane or trimethoxysilane was carried out using a vapor-phase flow reactor with use of tetraammineplatinum(II) chloride in polyethylene glycol medium supported on silica gel as a catalyst, which is an active and thermally stable supported liquid-phase catalyst prepared readily from easily available materials, tetraammineplatinum(II) chloride, polyethylene glycol and silica gel.

Potassium Alkylpentafluorosilicates, Primary Alkyl Radical Precursors in the C-1 Alkylation of Tetrahydroisoquinolines

In this study, we demonstrate that potassium alkylpentafluorosilicates (RSiF5K2) are efficient primary alkyl radical precursors for selective C(sp3)-C(sp3) bond-forming reactions. RSiF5K2 reagents are white, free-flowing solids and are moisture and air stable. This class of reagents enables the direct C-1 alkylation of tetrahydroisoquinolines under mild conditions via single-electron transfer. The broad substrate scope of both alkylpentafluorosilicates and tetrahydroisoquinolines is tolerated in this transformation. Both radical scavenger and EPR capture experiments show that the primary radical is generated by the oxidation of RSiF5K2. A mechanism involving alkyl radical addition to an iminium salt followed by reduction by an amine is proposed.

A direct method for preparing ethyldichlorosilane and its comparison with known alternative methods

Various methods, alternative to direct synthesis, for preparing an important commercial organosilicon monomer, ethyldichlorosilane, were studied in detail. The methods, including organomagnesium and organoaluminum procedures, hydrosilylation, and combined methods, were analyzed from the viewpoint of feasibility of laboratory and small-tonnage commercial production, and their advantages and drawbacks were revealed.

PREPARATION OF ORGANOHALOSILANES

A process for preparing organohalosilanes comprising combining hydrogen, a halosilane having the formula HaSiX4-a (I), and an organohalide having the formula RX (II), wherein R is C1-C10 alkyl or C4-C10 cycloalkyl, each X is independently halo, and the subscript a is 0, 1, or 2, in the presence of a sufficient amount of a catalyst effective in enabling the replacement of one or more of the halo groups of the halosilane with the R group from the organohalide, at a temperature from 200 to 800 °C, to form an organohalosilane and a hydrogen halide, wherein the volumetric ratio of hydrogen to halosilane is from 1 :3 to 1 :0.001 and the volumetric ratio of hydrogen to organohalide is from 1 : 1 to 1 :0.001, and wherein the catalyst is optionally treated with the hydrogen or the halosilane prior to the combining.

PROCESS FOR CONVERTING SI-H COMPOUNDS TO SI-HALOGEN COMPOUNDS

Silicon compounds containing Si—H groups are converted into silicon halides by reaction with hydrogen halide in the gas phase in the presence of a catalyst of gamma-alumina, which is also effective in dissociating hydrocarbons which may be present into lower boiling hydrocarbons.

Continuous and batch organomagnesium synthesis of ethyl-substituted silanes from ethylchloride, tetraethoxysilane, and organotrichlorosilane for production of polyethylsiloxane liquids. 1. Batch one-step synthesis of ethylethoxysilanes and ethylchlorosilanes

Development of batch one-step manufacturing process for ethylethoxy- and ethylchlorosilanes is desribed. The methodology of synthesis of ethyl-substituted silanes has been improved. The important factors for the successful synthesis have been determined. Among them are the replacement of the part tetraethoxysilane 3 by ethyltrichlorosilane 10, the optimum concentration of 3 and 10 resulting in high yield of triethylsilanes, low duration of synthesis, and high selectivity of Grignard reagent. Batch one-step synthesis has been assimilated into industry (up to a scale 240 kg of magnesium) for production of oligoethylsiloxanes with the high content (>40%) of a terminal triethylsiloxy group. The rules for R/D process of the Grignard synthesis are described.

Chlorohydrosilane derivatives and their preparation method

New chlorohydrosilane derivatives having the general formula (I) and preparation method thereof. The chlorohydrosilane derivatives (I) of the present invention which have both Si--Cl and Si--H bonds are prepared by partially reducing chlorosilane of the formula (II) which have at least two Si--Cl bonds with lithiumaluminum hydride. The chlorohydrosilane derivatives (I) of the present invention, which have both Si--H and Si--Cl bonds in a molecule can be advantageously used in preparing various compounds because a Si--H bond enables the hydrosilylation with unsaturated organic compounds, while a Si--Cl bond can participate in hydrolysis or in a reaction with a nucleophilic compound such as Grignard reatent: STR1 wherein R1 is straight, branched, or cyclic alkyl group having 1 to 30 carbon atoms, which can include an aromatic group or heterocyclic group, and R2 represents chloro group, or straight, branched, or cyclic alkyl group having 1 to 30 carbon atoms, which can include an aromatic group or heterocyclic group.

Stepwise organomagnesium synthesis of mixtures of ethyletoxysilanes and ethylchlorosilanes

Mixture of ethylethoxy- and ethylchlorosilanes was prepared in a toluene solution by successive reaction of magnesium with a mixture of ethyl chloride and tetraethoxysilane and then with a mixture of ethyl chloride and tetrachlorosilane.