Ethyl Maltol (E637 or 2-Ethyl pyromeconic acid) is a white crystal or crystalline powder with a caramel odor and fruity sweet taste. Ethyl Maltol crystals and powder are soluble in water, alcohol, propylene glycol and chloroform. Sinofi is a reliable Ethyl Maltol supplier and manufacturer in China. We can supply high quality E637 Ethyl Maltol crystals and powder for sale in vape, food and cosmetics at a competitive price.