1,2,3,4-бутантетракарбоновой кислота химические свойства, назначение, производство
Химические свойства
White leaf-shaped or needle-shaped crystals. melting point 236-237℃ for dextrorotatory-levorotatory type, 189℃ for endocyclic type. Solubility of the product in water (g/100g water): 30℃, 18.5; 50℃, 45.5; 70℃, 81.8. Soluble in ethanol. There is almost no hygroscopicity, and the purity does not decrease when left for more than two years.
Использование
1,2,3,4-Butanetetracarboxylic acid is used as a cross linking agent to prepare cotton cellulose in order to improve anti-prilling and flame retardant properties. It is used as a spacer in the cross-linking of titania nanoparticles to cotton. Further, it is used as a nonformaldehyde durable press finishing agent.
Подготовка
1,2,3,4-butanetetracarboxylic acid is obtained by oxidation of tetrahydrophthalic anhydride.
1,2,3,4-butanetetracarboxylic acid is prepared by oxidative cleavage of tetraphthalic acid or anhydride by oxidation with ozone-containing gas, followed by oxygen-containing gas, with the mixture then being heated with a peroxide, e.g. H2 O2, at 100° C. to produce the butanetetracarboxylic acid.
Process for preparing 1,2,3,4-butanetetracarboxylic acidОбщее описание
Leaflets (from water) or white powder.
Реакции воздуха и воды
Soluble in water.
Угроза здоровью
ACUTE/CHRONIC HAZARDS: When heated to decomposition 1,2,3,4-Butanetetracarboxylic acid emits acrid smoke and irritating fumes.
Пожароопасность
Flash point data for 1,2,3,4-Butanetetracarboxylic acid are not available; however, 1,2,3,4-Butanetetracarboxylic acid is probably combustible.
1,2,3,4-бутантетракарбоновой кислота препаратная продукция и сырье
сырьё
МЕДЬ
цис-1,2,3,6-тетрагидрофталевый ангидрид
Азотная кислота
Аммония метаванадат
3,4-Furandiacetic acid, tetrahydro-2,5-dioxo-, 3,4-diethyl ester
Butanedioic acid, bromo-, diethyl ester
1,2,3,6-Tetrahydrophthalic anhydride
препарат