What is fumaric acid? The advantages and applications will tell you

[alias]fumaric acid, fumaric acid, viroid acid.

[Molecular formula]C4H4O4

[structural formula]HOOCCH

［Property］ It exists naturally in corydalis, mushrooms and fresh beef. It is colorless needle-like or leaflet-like crystals in oblique crystal system, odorless, with fruity sour taste. The relative density is 1 .635 (20°C), the melting point is 286-287°C, it sublimes when heated to 290°C, and loses water when heated to 300°C to form maleic anhydride. Slightly soluble in water, 0.63g can be dissolved in 100mL water at 25°C, 1.07g can be dissolved at 40°C, and 9.8g can be dissolved at 100°C. Also slightly soluble in ether, acetone, carbon tetrachloride, chloroform and acetic acid, soluble in ethanol. The chemical properties are very active, and it can carry out reactions such as polymerization, acylation, amidation, halogenation, hydrogenation, hydration, alkylation, and isomerization. It has strong buffering properties and can keep the pH value of the aqueous solution at 3. right.

［Application］ Fumaric acid is used in the production of various unsaturated polyesters, and is widely used in the coating industry and the production of glass fiber reinforced plastics. It is an intermediate of medicine and pesticide, and is also used in the manufacture of adhesives and optical bleaching agents. In the food industry, it is widely used as sour agent, flavor enhancer, expansion agent and antioxidant aid. Its acidity is 1.8 times that of citric acid, and it is suitable to be added to jelly, ice cream, fruit candy, refreshing drinks, western wines, concentrated juices, etc. It can be added alone or compounded with tartaric acid, citric acid, etc.

[Brief recipe]

①Maleic acid is heated above 90°C under the action of thiourea catalyst, and isomerized to generate fumaric acid.

②Using furfural as raw material, react with sodium chlorate at 100℃ under the action of vanadium catalyst to prepare fumaric acid.

③Using liquid paraffin as raw material and Candida as strain, the finished product of fumaric acid can be obtained through fermentation, separation, decolorization, crystallization and other processes .

[Safety and Protection]This product is non-toxic. Packed in woven bags lined with plastic bags, with a net weight of 25kg per bag. Store in a cool dry place.