Dehydroacetic acid is used as an intermediate in organic synthesis. Vinyl acetate emulsion, acrylic acid emulsion and other resin emulsion paste, also used in polyvinyl alcohol, carboxymethyl cellulose, starch, bone glue and other mixtures of paste; Recently, it is widely used in adhesive, mosquito coil, feed, Chemicalbook wave, toothpaste and other fields. Because this article has the inhibition effect to mold, yeast, gram's bacillus, uses in the medicine, the cosmetic and the food aspect as the antimildew agent, the preservative, our country GB2760-1996 regulation can use in the beancurd, the assorted pickles, the original juice orange juice.