Fumaric acid, an acidity regulator, is an important organic chemical raw material and an intermediate in fine chemical products. It is also an important derivative of maleic anhydride and is widely used in the food, coating, resin, and plasticizer industries. In the food industry, fumaric acid is used as an acidulant in soft drinks, Western-style wines, frozen desserts, concentrated fruit juices, canned fruits, pickles, and ice cream. As an acidic substance used as a gas-generating agent in solid beverages, it produces persistent bubbles and a fine product texture.
Uses: Fumaric acid is permitted for use in food as an acidity regulator, acidifier, antioxidant, pickling accelerator, and edible flavoring according to GB2760-1996 of my country.
1. Precautions for Use
(1) This product has a strong buffering effect, maintaining the pH of the aqueous solution at around 3.0, and plays an important role in antibacterial and preservative properties.
(2) This product has an astringent taste and is one of the strongest acidic solid acids. Due to its low solubility in water, its application is limited. However, its low water absorption rate helps extend the shelf life of powdered products, etc. (3) Chemicalbook: After becoming sodium fumarate, this product has better water solubility and flavor.
2. Scope of Use and Dosage
(1) My country's "Hygienic Standard for the Use of Food Additives" (GB2760-1996) stipulates: For carbonated beverages, the maximum dosage is 0.3g/kg; for fruit juice beverages and raw wet noodle products, it is 0.6g/kg.
(2) Actual usage reference: ① For noodles, bread, and steamed buns, add it when kneading the dough. The dosage is 3g/kg for noodles and about 1g/kg for bread and steamed buns.
② For jams and jellies, the maximum dosage is 3g/kg. Use alone or in combination with tartaric acid and its salts to maintain the pH at 2.8-3.5.
③ For soft drinks, cold drinks, concentrated fruit juices, canned fruits (peaches, oranges), etc., it is often used in combination with other organic acids. When used in combination with citric acid, the dosage is 20%-30% of the citric acid. ④ Used in the preparation of wines and pickles at 2-5 g/kg (in combination with succinic acid).
⑤ When used as an acidic substance in solid beverages as a gas-generating agent, this product produces persistent and fine bubbles.
Uses:
As a mordant, used in the manufacture of unsaturated polyester resins, pesticides, acidulants, and amino acids; often used as an acidulant, mostly in combination with citric acid. Can be used in raw wet noodle products and fruit juice beverages, with a maximum usage of 0.6 g/kg; also used in carbonated beverages, with a maximum usage of 0.3 g/kg.
Food acidulant, playing an important role in antibacterial and preservative effects; acidity regulator, acidifier, heat-resistant oxidation aid, pickling accelerator, flavoring. When used as an acidic substance in solid beverages as a gas-generating agent, it produces persistent and fine bubbles; a fine chemical intermediate in pharmaceuticals and optical bleaching agents. Used in the production of the antidote sodium dimercaptosuccinate and the drug for treating microcytic anemia, iron supplementation. Also used in the production of unsaturated polyester resins. Used for standardizing alkali solutions. Separation of thorium from cerium, lanthanum, praseodymium, and rubidium. Synthetic resins. Mordants. Antioxidants.
Fumaric acid is used in the production of unsaturated polyester resins. These resins are characterized by good chemical resistance and heat resistance. The copolymer of fumaric acid and vinyl acetate is a good adhesive, and the copolymer with styrene is a raw material for manufacturing fiberglass. Plasticizers derived from fumaric acid are non-toxic and can be used in vinyl acetate latex that comes into contact with food. This product is an intermediate in pharmaceuticals and optical bleaching agents, among other fine chemicals. In the pharmaceutical industry, it is used in the production of the antidote dimercaptosuccinic acid. Neutralizing fumaric acid with sodium carbonate yields sodium fumarate ([17013-01-3]), which is then replaced with ferrous sulfate to obtain ferric fumarate, a drug used to treat microcytic anemia. This product is used as a food additive—acidulant—in soft drinks, fruit candies, jellies, ice cream, etc. It is mostly used in combination with the acidulant citric acid. The monosodium salt produced by the reaction of fumaric acid and sodium hydroxide is also used as a sour flavoring agent. It is also used as an intermediate in the synthesis of resins and mordants.