This standard specifies the requirements, test methods, inspection rules, labeling, packaging, transportation, storage and shelf life of the feed additive DL-c-tocopheryl acetate (powder). This standard is applicable to the feed additive DIL-"-tocopheryl acetate (powder) made of feed additive DL-"-tocopheryl acetate as raw material, combined with carrier and auxiliary materials. Carriers and auxiliary materials should meet the requirements of 4 Feed Raw Materials Catalogue, Feed Additives Variety Catalogue, and Feed Hygienic Standards. Chemical name: DL-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-6-decanodioxypyranol acetate Molecular formula: Ca Ha O, relative molecular mass: 472.74 (according to the international relative atomic mass in 2007) structural formula: