764-99-8 Usage
Chemical Properties
diethylene glycol divinyl ether is monomeric in character and is used as a chemical intermediate or as a crosslinking agent. Addition of isocyanic acid produces secondary diisocyanates. Divinyl ethers hydrolyze to the glycol and acetaldehyde. Chlorine or bromine add to the double bonds. Reaction with an alcohol in the presence of water produces a diacetal. Polymerization of divinyl ether of diethylene glycol with acidic catalysts produce crosslinked gels. Unsaturated polyesters, crosslinked with styrene, have been made noncorrosive to metals through use of divinyl ethers to reduce hydroxyl ond acid numbers.
Uses
Diethylene glycol divinyl ether is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.
Flammability and Explosibility
Nonflammable
Check Digit Verification of cas no
The CAS Registry Mumber 764-99-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,6 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 764-99:
(5*7)+(4*6)+(3*4)+(2*9)+(1*9)=98
98 % 10 = 8
So 764-99-8 is a valid CAS Registry Number.
InChI:InChI=1/C4H10O3.C4H6O/c5-1-3-7-4-2-6;1-3-5-4-2/h5-6H,1-4H2;3-4H,1-2H2
764-99-8Relevant articles and documents
PROCESS FOR PREPARING DIVINYL ETHERS
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Page/Page column 3, (2012/09/05)
Process for preparing divinyl ethers by reacting compounds having two hydroxyl groups (hereinafter referred to as diols) with acetylene, wherein the hydroxyl groups are incompletely reacted with acetylene and the resulting product mixture therefore comprises the monovinyl ether in addition to the divinyl ether andthe monovinyl ether is separated off from the product mixture by extractive distillation in the presence of an extractant.
Purification of alkenyl compounds
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Page column 8, (2008/06/13)
A process for purifying alkenyl compounds having a divalent or trivalent heteroatom in the à-position relative to the double bond by distillation comprises carrying out at least two distillations in which the purified alkenyl compounds are obtained from the gas phase by condensation, where the time between the first distillation after the synthesis of the alkenyl compounds and at least one further distillation is at least one day and the purified alkenyl compounds have an APHA color number of 30.
Liquid-phase fluorination
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, (2008/06/13)
This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.
