application of vanillic acid_kain industrial additives
background[1][2] the vanillic acid system name is “4-hydroxy-3-methoxybenzoic acid”. molecular formula c8h8o4. molecular weight 168.14. white needle-like crystals. odorless, sublimates and does not decompose. melting point 210℃. easily soluble in ethanol, soluble in ether, slightly soluble in water. it does not develop color when reacting with ferric chloride. vanillic acid is one of the active ingredients of huahuanglian. the structures of coptidis glycosides contain vanillic acid…
