China enamel manufacturerswholesale 2020 high quality enamel products in best price from certified chinese enamel product wholesalers, enamel metal manufacturers, suppliers and factory on made-in-china Red iron oxide chemical formula color pigment powder for enamel properties and appearance : red iron oxide chemical formula color pigment powder for enamel ,red powder. we are one of the most important iron oxide chemical formula color pigment powder producer and supplier in all of the world as well. Alibaba offers 116 pigment for vitreous enamel products. about 22% of these are pigment, 6% are oxide. a wide variety of pigment for vitreous enamel options are available to you, such as titanium, cobalt, and chromium. you can also choose from ceramic pigments, coating pigment, and cosmetic pigment. A. flux is any number of chemicals that are added to the pigment chemicals to provide a glass matrix and bond with the glass substrate. flux formulations for glass enamels are likely to contain lead oxide and boron oxide. (lead free enamels are available).