Explanatory notes
… salts, ethers, esters and other derivatives. 3201.10 - Quebracho extract 3201.20 - Wattle extract 3201.90 - Other … varying proportions of tannin as well as other substances such as sugar, mineral salts, organic acids, etc. They are … The principal tanning extracts are those from oak, chestnut, quebracho, pines, wattle (mimosa), sumach, …