1. Fumaric acid is used to produce unsaturated polyester resin. This type of resin is characterized by good chemical corrosion resistance and heat resistance;
2. The copolymer of fumaric acid and vinyl acetate is a good adhesive, and its copolymer with styrene is the raw material for making fiberglass.
3. The plasticizer made from fumaric acid is non-toxic and can be used in vinyl acetate latex that comes into contact with food.
4. Fumaric acid, as a food additive - sour agent, is used in refreshing drinks,
fruit candies, jelly, ice cream, etc. Most of them are used together with the sour agent citric acid. Fumaric acid is a single product made by the reaction of fumaric acid and sodium hydroxide. Sodium salt is also used as a sour condiment and as an intermediate for synthetic resins and mordants.