Uses: Flavoring agent, flavor enhancer. In the food industry, succinic acid can be used as a food acidifier for flavoring wine, feed, candy, etc. In the food industry, it can also be used as a modifier, flavoring substance and antibacterial agent. In the pharmaceutical industry, it can be used to produce sulfonamides, vitamin A, vitamin B and other antispasmodics, phlegm loosening agents, diuretics and hemostatic drugs. As a chemical reagent, it is used as a standard reagent for alkalinity method, a buffer, and a gas chromatography comparison sample. It can also be used as a raw material for lubricants and surfactants. In the electroplating industry, it prevents metal dissolution and pitting. As a surfactant, detergent additive and foaming agent.