GB 7300.103-2020 Feed additives — Part 1: Amino acids, their salts and analogues — Methionine hydroxy analogue
1 Scope
This part of GB 7300 specifies the requirements, test methods, inspection rules as well as labelling, packaging, transportation, storage and shelf life of methionine hydroxy analogue for feed additives.
This part is applicable to methionine hydroxy analogue of feed additives produced through chemical synthesis with acrolein, methyl mercaptan and hydrocyanic acid as the main raw materials.
Chemical name: 2-hydroxy-4-methylthio-butyric acid
Molecular formula: C5H10O3S
Relative molecular mass: 150.2 (calculated as C5H10O3S, in accordance with the International Standard Table of Relative Atomic Weights 2016)
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 601 Chemical reagent - Preparations of reference titration solutions
GB/T 602 Chemical reagent - Preparations of standard solutions for impurity
GB/T 603 Chemical reagent - Preparations of reagent solutions for use in test methods
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB 10648 Feed label
GB/T 13079-2006 Determination of total arsenic in feeds
3 Requirements
3.1 Appearance and property
This product is a brown or dark brown viscous liquid with a special odor and is highly soluble in water.
Warning: This product is highly corrosive. Avoid contact with eyes and skin. If it accidentally comes into contact with skin, rinse immediately with plenty of water.
3.2 Technical indexes
The technical indexes of methionine hydroxy analogue shall meet those specified in Table 1.
Table 1 Technical index
Foreword I
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Labelling, packaging, transportation and storage
7 Shelf life
