This standard specifies the requirements, test methods, inspection rules, labels, packaging, transportation, storage and shelf life of feed additive vitamin D (microparticles). This standard is applicable to common feed additive vitamin D; (microparticles) made of feed additive vitamin D; Water-dispersible feed additive vitamin D made of auxiliary materials; (microparticles). The auxiliary materials should meet the requirements of the "Feed Raw Materials Catalogue, Feed Additives Variety Catalogue" and "Feed Hygienic Standards". Chemical name: (38,5Z,7E)-9,10-cyclocholate-5,7,10(19)-trien-3-ol Molecular formula: Cy HuO Relative molecular mass: 384.64 (2007 International Relative Atomic mass) Chemical structural formula: also CHs CHs