This standard specifies the product classification, technical requirements, test methods, inspection rules, as well as labelling, packaging, transportation and storage of zinc sulphate for feed additive.
This standard is applicable to feed additive zinc sulphate produced by reaction of zinciferous materials and sulphuric acid.
Molecular formula: ZnSO4?nH2O.
Relative atomic mass: 179.47 (n=1), 287.56 (n=7) (as per 2007 international relative atomic mass).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated reference, the latest edition of the referenced document (including any amendments) applies.
GB/T 601 Chemical Reagent — Preparations of Reference Titration Solutions
GB/T 5917.1 Determination for Feed Particle Size — Two-sieve Screening Method
GB/T 6682 Water for Analytical Laboratory Use — Specification and Test Methods
GB 10648 Feed Label
GB/T 13079 Determination of Total Arsenic in Feeds
GB/T 13080 Determination of Lead in Feeds — Method Using Atomic Absorption Spectrometry
GB/T 13082 Method for Determination of Cadmium in Foods
3 Product Classification
Feed additive zinc sulphate is classified as follows according to the zinc content: zinc sulfate monohydrate, zinc content ≥ 34.5%; zinc sulfate heptahydrate, zinc content ≥ 22.0%.
