This standard specifies the technical requirements, test methods, inspection rules, labeling, packaging, storage and transportation of feed additive vitamin B 1, (thiamine nitrate). This standard applies to vitamin B 1 obtained by chemical synthesis. (Thiamine nitrate) products are used as vitamin feed additives in the feed industry. Chemical name: 4-methyl-3-[(2-methyl-4-amino-5-pyrimidinyl)methyl]-5-(2-hydroxyethyl)thiazolium nitrate. Molecular formula: C12H17N504S Relative molecular mass: 327.37 (2001 international relative atomic mass) Structural formula abbreviated