GB/T 21694-2008 (English Version) PDF

Standard No.: GB/T 21694-2008
Language: Chinese, Available in English version
Release Date: 2008
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2018-05
Replace By: GB 21694-2017
Latest: GB 21694-2017

Scope: This standard specifies the requirements, test methods, inspection rules and labeling, packaging, transportation, storage, etc. of the feed additive zinc methionine. This standard applies to zinc methionine products with a methionine-zinc molar ratio of 2:1 or 1:1 synthesized from soluble zinc salt and methionine (2-amino-4-methylthio-butyric acid). Methionine—zinc methionine product with a zinc molar ratio of 2:1: the molecular formula is C₁₀H₂₀N₂O₄S₂Z relative molecular mass is 361.8. Methionine—zinc methionine product with a zinc molar ratio of 1:1: the molecular formula is (C₅H₁₀NO₂SZ_n)HSO₄, The relative molecular mass is 311.6.

GB/T 21694-2008 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 17810 Feed grade DL-methionine*， 2009-05-26 Update
GB/T 5917 Determination for formula feed particle size
GB/T 6435 Determination of moisture in feedstuffs*， 2014-07-08 Update
HG 2934 Feed grade zinc sulphate

GB/T 21694-2008 Feed additive.Zinc methionine was changed to GB 21694-2017 Feed additive―Zinc methionine complex (chelate).