17689-77-9 Usage
Description
(Triacetoxy)ethylsilane, also known as Ethyltriacetoxysilane (ETAS), is a colorless to yellowish transparent liquid with an acrid odor reminiscent of acetic acid (vinegar). It is a chemical compound that hydrolyzes in the presence of moisture, releasing acetic acid and forming silanols. These silanols can react with themselves to produce siloxanes or bind to inorganic substrates, making it a versatile compound with various applications.
Uses
Used in Sealants:
(Triacetoxy)ethylsilane is used as a cross-linking agent and adhesion promoter in the sealant industry. It enhances the bonding properties and durability of sealants, making them more effective in various applications.
Used in Acetoxy Crosslinking RTV-1 Sealant Formulations:
(Triacetoxy)ethylsilane is used as a curing agent in acetoxy crosslinking RTV-1 sealant formulations. The curing reaction produces acetic acid as a byproduct, which can be corrosive to certain materials like marble or iron. Therefore, it is essential to consider the potential corrosive effects of the byproduct when using acetate crosslinkers in these formulations.
Flammability and Explosibility
Nonflammable
Check Digit Verification of cas no
The CAS Registry Mumber 17689-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,8 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 17689-77:
(7*1)+(6*7)+(5*6)+(4*8)+(3*9)+(2*7)+(1*7)=159
159 % 10 = 9
So 17689-77-9 is a valid CAS Registry Number.
InChI:InChI=1/C8H14O6Si/c1-5-15(12-6(2)9,13-7(3)10)14-8(4)11/h5H2,1-4H3
17689-77-9Relevant articles and documents
Preparation of acyloxysilanes
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, (2008/06/13)
Acyloxysilanes are prepared by the anhydrous reaction of stoichiometric amounts of a carboxylic acid with a mixture of a halosilane and a silazane in an aprotic solvent, such as diethyl ether, acetonitrile, tetrahydrofuran or toluene, in an inert gas atmosphere. In a preferred embodiment the silazane is prepared in situ by the reaction of the corresponding halosilane and ammonia. No catalyst is necessary and the reaction preferably is performed at a temperature of -5° C. to 45° C.
Process for the preparation of organocarbonoyloxysilanes
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, (2008/06/13)
Organocarbonoyloxysilanes are prepared by reacting an organochlorosilane with a carboxylic acid in a first step which liberates HCl, removing the HCl which is formed, reacting the reaction mixture from the first step with a carboxylic acid anhydride in a second reaction step, the first and/or second reaction steps being conducted in the presence of a catalyst, and isolating the resulting organocarbonoyloxysilane product from the reaction mixture.
