CAS: 110-17-8, fumaric acid

English name: TMEDA, Fumaric acid, Allomaleic acid, Boletic acid, Lichenic acid, trans-1, 2-Ethylenedicarboxylic acid Other names: fumaric acid, fumaric acid, purpuric acid, E)-2-butene, anti-1 ,2-ethylene dihydroxy acid, 1,2-ethylene dicarboxylic acid CAS number: 110-17-8 C4H4O4=116.07 Grade: CP Content: ≥99.0% Chloride: ≤0.002% Chlorate: qualified iron: ≤0.001 % Heavy metal: ≤0.002% Burning residue: ≤0.05% Properties: white monoclinic prism, needle or leaf crystal. Sublimation at 200 ° C, partial carbonization at 230 ° C. Soluble in alcohol, slightly soluble in water and ether, solubility in 100g water: 0.63g at 25°C, 1.07g at 40°C, 2.4g at 60°C, solubility in 95% ethanol at 100°C: 5.76g at 30°C, 100g Solubility: 1.72 g at 30 ° C, solubility in 100 g of diethyl ether: 0.72 g at 25 ° C. Almost insoluble in olive oil, chloroform, benzene, carbon tetrachloride, di- and liquid ammonia. (closed tube, heated rapidly). Irritating. The solubility of cold water-soluble fumaric acid in cold water is increased by more than 65%. It is a more pure sour taste, its acidity is 2.5 times that of citric acid, and its emulsifying property and stability are better. Density: 1.635, melting point: 287 ° C Uses: biochemical research. Calibrate the standard lye. Separate 钍 from 铈, 镧, 镨 and 铷. Synthetic resin. Mordant. Antioxidant preservation: RT

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