Sodium benzoate, a white granular powder, is a chemical additive that is one of the active ingredients in preservatives. Sodium benzoate is a white granular powdery substance with a sweet flavor, as a chemical additive, it is one of the active ingredients in preservatives, and has a certain inhibitory effect on yeast, fungi, molds, bacteria, etc. It can be added to foods and medicines as preservatives and additives. Sodium benzoate is very useful and has a wide range of uses. 1. Sodium benzoate can be mainly used as a food preservative, but also can be used to make dyes as well as medicines. 2. Sodium benzoate is also an important acidic food preservative, which can be converted to the active form benzoic acid when used. 3. Sodium benzoate can be used in the pharmaceutical industry and plant genetic research, as well as a dye intermediate, fungicide and preservative. 4. Sodium benzoate can also be used as a co-solvent in serum bilirubin test, as a bactericide in the pharmaceutical industry, as a food additive, as a plasticizer in the plastics industry and as a mordant in the dye industry.