三乙氧基硅烷

Description

Triethoxysilane · CAS 998-30-1 · C6H16O3Si. UNII 8T460WDH89. Boiling Point: 270 to 275 °F at 760 mmHg (EPA, 1998); Boiling Point: 133.5 °C; Boiling Point: 133.5 °C @760 [mm Hg].

Identification

CAS Registry Number	998-30-1
PubChem CID	13830
Molecular formula	C6H16O3Si
IUPAC name	triethoxysilane
UNII (FDA)	8T460WDH89

Computed Descriptors

Molecular Weight	164.27
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	6
Exact Mass	164.08687090
Monoisotopic Mass	164.08687090
Topological Polar Surface Area	27.7
Heavy Atom Count	10
Formal Charge	0
Complexity	55.7

Physical & Chemical Properties

Boiling Point	270 to 275 °F at 760 mmHg (EPA, 1998)
Boiling Point	133.5 °C
Boiling Point	133.5 °C @760 [mm Hg]
Melting Point	-170 °C
Flash Point	26 °C
Flash Point	80 °F (26 °C) (Closed cup)
Flash Point	26 °C c.c.
Density	0.8745 at 20 °C
Density	0.87 g/cm³
Density	0.8745 @ 20°C

Physical description & handling notes

• Triethoxysilane is a liquid. Used as a reducing agent.
• Liquid
• Colorless to yellow liquid with a sweetish odor; [AIHA]
• COLOURLESS LIQUID.
• 0.8745 at 68 °F (EPA, 1998) - Less dense than water; will float
• Relative vapor density (Air = 1): 5.7

Regulatory Status

GHS notification summary	6.9% (8 / 116)

GHS Hazard Classification

GHS notification summary	6.9% (8 / 116)
Reported hazard statements	H226 (86.2%), H252 (19%), H260 (19%), H302 (34.5%), H314 (58.6%), H315 (34.5%), H318 (36.2%), H330 (93.1%)

Documented Uses

• Used to make organic coupling agents and low-temperature-vulcanizing (LTV) silicone rubbers and elastomers; [HSDB]
• Is of commercial importance in the silane and silicone industry for the production of organofunctional coupling agents, low-temperature-vulcanizing (LTV) silicone rubbers and elastomers, and specialty monomers.
• ... Used to prepare a number of organic coupling agents utilized by the plastics industry as adhesion promoters.
• Reaction of silicon with ethanol ... produces triethoxysilane ... with cuprous chloride as the catalyst ... .
• Production volumes for non-confidential chemicals reported under the Inventory Update Rule. [Table#5876]
• Production volume for non-confidential chemicals reported under the 2006 Inventory Update Rule. Chemical: Silane, triethoxy-. Aggreated National Production Volume: <500,000 lbs.

Synonyms

RefChem:899464; DTXCID7031240; 213-650-7; 8T460WDH89; 998-30-1; DTXSID6052667; NSC-124134; Silane, triethoxy-; SIT 8185; Triethoxysilane; hydridotriethoxysilane; HSi(OEt)3; Si(OEt)3H; Triethoxisilane; triethoxy silane; triethoxy-silane

Frequently Asked Questions

What are the CAS number and molecular formula of Triethoxysilane?

CAS 998-30-1; molecular formula C6H16O3Si; molecular weight — g/mol.

What other names is Triethoxysilane known by?

RefChem:899464, DTXCID7031240, 213-650-7, 8T460WDH89, 998-30-1, DTXSID6052667.

Is Triethoxysilane classified as hazardous?

6.9% of GHS notifications report no hazard classification (8 of 116).

What are the key physical properties of Triethoxysilane?

Boiling Point: 270 to 275 °F at 760 mmHg (EPA, 1998); Boiling Point: 133.5 °C; Boiling Point: 133.5 °C @760 [mm Hg]; Melting Point: -170 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.