Colorless or yellow deliquescent crystal or liquid. Soluble in ethanol, ether, soluble in water. It is chemically active and can be added or condensed with ammonia, amide, aldehyde or carboxyl group-containing compounds. Mainly used in the textile industry. It is obtained by gas phase catalytic oxidation of ethylene glycol and air.
The vapor is green and has a purple flame when burned. Polymerize when placed, in contact with water (violent reaction) or dissolved in an aqueous solvent. It usually exists in various polymeric forms. The anhydrous polymer is converted to a monomer upon heating. The monomer solution is obtained by co-heating the polymer with p-propenyl anisole, phenethyl ether, xanthine, methyl decyl ketone or benzaldehyde. The aqueous solution contains monomolecular glyoxal, which is weakly acidic and chemically active, and can be added or condensed with ammonia, amide, aldehyde or carboxyl group-containing compound.
Colorless or pale yellow prismatic crystals or liquid
250KG / plastic bucket
Cool,dry and hermetic place
Glyoxal is mainly used in the textile industry. The fiber treatment agent can increase the spinning and crease resistance of cotton, nylon and other fibers, and is a durable pressing finishing agent. In Japan, this use accounts for 80% of the total amount of glyoxal. Glyoxal is an insoluble binder such as gelatin, animal glue, cheese, polyvinyl alcohol and starch. Glyoxal is also used in the leather industry and in making waterproof matches. Glyoxal is a raw material for organic synthesis. Heating and condensation of acetaldehyde and urea, formaldehyde in the presence of sodium carbonate to obtain 2D-resin, used as a fabric finishing agent; reaction of glyoxal with formaldehyde, ammonium sulfate, ring synthesis of imidazole, and then synthesis of imidazole antifungal drug clotrimazole, Miconazole, etc.; glyoxal and o-phenylenediamine are cyclized to give benzopyrazine: it is an intermediate of the antituberculosis drug pyrazinamide. Hydroxyphenylacetic acid produced from glyoxal has been industrially produced in Japan and is used as an intermediate in the antibiotic and vitamin A series. Glyoxal is also used in the synthesis of berberine hydrochloride and the sulfa drug sulfamethoxazole. Also used in insecticides, deodorants, cadaver preservatives, sand curing agents.