GB 21694-2017 (English Version) PDF

Scope: This standard specifies the requirements, test methods, inspection rules and labels, packaging, transportation, storage and shelf life of feed additive zinc methionine complex (chelate). This standard is applicable to zinc omegaate complexes synthesized with sulfuric acid and zinc and methionine (2-nitro-4-methylthio-butyric acid) in a molar ratio of 2: ———— 1 or 1:1. compound products. The molecular formula of the methionine complex (whole) complex with a molar ratio of 2:1 is: Cio HoN:O4S, Zn, and the relative molecular mass is 361.80. The molecular formula of the methionine zinc complex (whole) compound with a molar ratio of 1:1: (C; Hu NO, SZn) HSO, and the relative molecular mass is 310.65 (according to the international relative atomic mass in 2007).

GB 21694-2017 Referenced Document

GB 10648 Feed Label "No. 1 Amendment"*， 2020-12-24 Update
GB/T 13079 Determination of total arsenic in feeds*， 2022-12-30 Update
GB/T 13080 Determination of lead in feeds—Atomic absorption spectrometry*， 2018-09-17 Update
GB/T 13080.2 Determination of chelation percentage of iron、copper、manganese and zinc methionine of gel filtration chromatography
GB/T 13082 Determination of cadmium in feeds*， 2021-11-26 Update
GB/T 14699.1 Feeding stuffs--Sampling
GB/T 601 Chemical reagent.Preparations of reference titration solutions
GB/T 6435 Determination of moisture in feedstuffs
GB/T 6682 Water for analytical laboratory use.Specification and test methods
HG 2934 Feed grade zinc sulphate

GB 21694-2017 Feed additive―Zinc methionine complex (chelate) has been changed from GB/T 21694-2008 Feed additive.Zinc methionine.