162781-73-9

Basic information

• Product Name: Hydroxymethyltriethoxysilane
• Synonyms: HYDROXYMETHYLTRIETHOXYSILANE: 50% IN ETHANOL
• CAS NO: 162781-73-9
• Molecular Formula: C7H18O4Si
• Molecular Weight: 194.3009
• Mol File: 162781-73-9.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 180.377 °C at 760 mmHg
• Flash Point: 62.89 °C
• Appearance: /
• Density: 0.866
• Vapor Pressure: 0.265mmHg at 25°C
• Refractive Index: 1.423
• CAS DataBase Reference: Hydroxymethyltriethoxysilane(CAS DataBase Reference)
• NIST Chemistry Reference: Hydroxymethyltriethoxysilane(162781-73-9)
• EPA Substance Registry System: Hydroxymethyltriethoxysilane(162781-73-9)

Safety Data

• TSCA: No
• Hazardous Substances Data: 162781-73-9(Hazardous Substances Data)

Usage

General Description

Hydroxymethyltriethoxysilane is a chemical compound with the formula CH3Si(OCH2CH3)3. It is an organosilicon compound that contains a silane group, a hydroxyl group, and three ethoxy groups. It is used as a coupling agent in the production of adhesives, sealants, and coatings to improve adhesion to various substrates such as glass, metal, and plastics. It can also be used as a crosslinking agent in the production of silicone polymers and as a surface modifier to enhance the properties of materials such as plastics and ceramics. In addition, it is used as a precursor for the synthesis of other organosilicon compounds.

InChI:InChI=1/C7H18O4Si/c1-4-9-12(7-8,10-5-2)11-6-3/h8H,4-7H2,1-3H3

Upstream product

• 998-30-1 Triethoxysilane 
• 123-54-6 acetylacetone 
• 15267-95-5 chloromethyltriethoxysilane 
• 127-08-2 potassium acetate 

Relevant articles and documents

Synthesis of 2,2,5,5-Tetrasubstituted 1,4-Dioxa-2,5-disilacyclohexanes via Organotin(IV)-Catalyzed Transesterification of (Acetoxymethyl)alkoxysilanes

(Acetoxymethyl)silanes 2, 7 a-c, and 10 a-c with at least one alkoxy group, of the general formula (AcOCH2)Si(OR)3-n(CH 3)n (R: Me, Et, iPr; n=0, 1, 2), were synthesized from the corresponding (chloromethyl)silanes 1, 6 a-c, and 9 a-c by treatment with potassium acetate under phase-transfer-catalysis conditions. These compounds were found to provide 2,2,5,5-organo-substituted 1,4-dioxa-2,5- disilacyclohexanes 3, 8 a-c, and 11 a-c if treated with organotin(IV) catalysts such as dioctyltin oxide. The reaction proceeds through transesterification of the acetoxy and alkoxy units followed by ring-closure to form a dimeric six-membered ring. The corresponding alkyl acetates are formed as the reaction by-products. With these mild conditions, the method overcomes the drawbacks of previously reported synthetic routes to furnish 2,2,5,5-tetramethyl-1,4-dioxa-2, 5-disilacyclohexane (3) and even allows the synthesis of 1,4-dioxa-2,5- disilacyclohexanes bearing hydrolytically labile alkoxy substituents at the silicon atom in good yields and high purity. These new materials were fully characterized by NMR spectroscopy, elemental analysis, mass spectrometry, and X-ray analysis (trans-8 a). Tin makes the ring! Easily accessible (acetoxymethyl)silanes with at least one alkoxy group give 2,2,5,5-organo- substituted 1,4-dioxa-2,5-disilacyclohexanes (see figure) in good yields and high purity when treated with organotin(IV) catalysts. The mild reaction conditions even allowed the synthesis of cyclic silanes with hydrolytically labile alkoxy substituents. Copyright