Triethoxysilan

TES · TRIES · triethoxy-silan · Silane, triethoxy- · DK967 · CT2500 · DKSI078 · HSi(OC2H5)3

https://huagongshe.com/de/chemical/13830

Identifikatoren & physikalische Daten

CAS No.	998-30-1
Summenformel	C6H16O3Si
Durchschnittliche Molmasse	164,27 g/mol
Monoisotopische Masse	164,0868709 g/mol
SMILES	CCO[SiH](OCC)OCC
InChIKey	QQQSFSZALRVCSZ-UHFFFAOYSA-N
PubChem CID	13830
EC No.	213-650-7
DTXSID	DTXSID6052667
Lokaler Name	Triethoxysilan

Chemische & physikalische Eigenschaften

Polarare Oberfläche (TPSA)	27,7
H-Brücken-Donoren	0
H-Brücken-Akzeptoren	3
Frei drehbare Bindungen	6
Schwere Atome	10
Formalladung	0
Komplexität	55,7
Stoffklassen	Metals -> Metalloid Compounds (Silicon)Flammable agents - 3rd degree
SpringerMaterials Properties	Chemical shift
Dichte	0.8745 at 68 °F (EPA, 1998) - Less dense than waterwill float0.8745 at 20 °C0.87 g/cm³0.8745 @ 20°C0.89 g/mL at 25 °C(lit.)
Flammpunkt	26 °C80 °F (26 °C) (Closed cup)26 °C c.c.
Siedepunkt	270 to 275 °F at 760 mmHg (EPA, 1998)133.5 °C133.5 °C @760 [mm Hg]134-135 °C(lit.)
Decomposition	When heated to decomposition, it emits acrid smoke and irritating fumes.The silanes decomp at elevated temp to liberate hydrogen and deposit a high purity silicon, which leads to some of the principal uses of silanes. /Silanes/Hazardous decomposition products: Reacts with water to form ethanol.
Schmelzpunkt	-170 °C-170°C
Dampfdichte	Relative vapor density (Air = 1): 5.7
Dampfdruck	20.25 [mmHg]8.5 [mm Hg] @25 °C9.21hPa at 20℃
Brechungsindex	Index of refraction: 1.337 at 20 °Cn20/D 1.377(lit.)
Physical Description	Triethoxysilane is a liquid. Used as a reducing agent.Colorless to yellow liquid with a sweetish odor[AIHA]COLOURLESS LIQUID.
Other Experimental Properties	Moisture-sensitiveOrganosilanes containing one or more Si--H bonds have excellent reducing capabilities. /Organosilanes/Organo-functional silanes are noted for their ability to bond organic polymer systems to inorganic substrates. /Silane cmpd/The reaction of organosilanes with halogens and halogen cmpd usually proceeds in good yield through cleavage of the Si--H bond and formation of the silicon-halogen bond. Reaction with fluorine, however, does not proceed satisfactorily because of cleavage of not only the Si--H but also C--Si and C--H bonds. Direct halogenation with chlorination, bromine, and iodine proceeds smoothly, however. /Organosilanes/
Lagerbedingungen	Store at 0-5°C
Löslichkeit	sol diethyl ether, THF, alkanes, aromatic and chlorinated solvents.Insoluble in water. Soluble in organic solvents.
Aggregatzustand	A liquid
Wichte	0.8753
BRN	1738989
Stabilität	Stable, but moisture sensitive. Flammable. Incompatible with strong oxidizing agents, strong acids, strong bases.
InChIKey	QQQSFSZALRVCSZ-UHFFFAOYSA-N
CAS Datenbank	998-30-1(CAS DataBase Reference)
NIST chemische Informationen	Silane, triethoxy-(998-30-1)
EPA chemische Informationen	Triethoxysilane (998-30-1)

Sicherheit & Vorschriften

GHS-Einstufung	This chemical does not meet GHS hazard criteria for 6.9% (8 of 116) of reports.DangerH226 (86.2%): Flammable liquid and vapor [Warning Flammable liquids]P210, P223, P231+P232, P233, P235, P240, P241, P242, P243, P260, P264, P264+P265, P270, P271, P280, P284, P301+P317, P301+P330+P331, P302+P335+P334, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P320, P321, P330, P332+P317, P362+P364, P363, P370+P378, P402+P404, P403+P233, P403+P235, P405, P407, P410, P413, P420, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 116 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatorische Informationen	Chemical: Silane, triethoxy-Silane, triethoxy- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silane, triethoxy- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 14-01-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/5339Silane, triethoxy-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)
Weitere Sicherheitsinformationen	Evaluation - Chemicals that are unlikely to require further regulation to manage risks to environment
DOT-Kennzeichnung	Poison Inhalation Hazard Flammable Liquid
Brandgefahren	When heated to decomposition, it emits acrid smoke and fumes. (EPA, 1998)Flammable. Above 26 °C explosive vapour/air mixtures may be formed.
Brandpotenzial	Flammable liquid... Trichlorosilane is highly flammable. /Trichlorosilane/
Gesundheitsgefahren	Toxicity is similar to silanes. Silanes are moderately irritating to skin, eyes, and mucous membranes. Silane compounds are toxic. (EPA, 1998)

Anwendungen & Verwendung

Beschreibung

Triethoxysilane is an organosilicon compound with the formula HSi(OC2H5)3. It is a colourless liquid used in precious metal-catalysed hydrosilylation reactions. The resulting triethoxysilyl groups are often valued for attachment to silica surfaces.Compared to most compounds with Si-H bonds, triethoxysilane exhibits relatively low reactivity. Like most silyl ethers, triethoxysilane is susceptible to hydrolysis. As reducing agent, triethoxysilane can for example be used in reduction of amides, reduction of carbonyl compounds in the presence of cobalt(II) chloride as catalyst, Cu-catalyzed reductive hydroxymethylation of styrenes, and Rh-catalyzed hydrodediazoniation.

Verwenden

Triethoxysilane is useful reagent for the hydrosilylation of carbon–carbon multiple bonds; reducing agent for carbonyl groups