GB 7300.201-2019 Feed additives — Part 2: Vitamins, provitamins and chemically well-defined substances having similar effect — L-Ascorbyl-2-phosphate
1 Scope
This part of GB 7300 specifies the technical requirements, test methods, inspection rules as well as labeling, packaging, transportation, storage and shelf life of L-Ascorbyl-2-phosphate for feed additive.
This part is applicable to the L-Ascorbyl-2-phosphate prepared by the reaction of L-Ascorbic acid with metaphosphate (sodium, calcium, magnesium, etc.).
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 references, the latest edition of the referenced documents (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 6435 Determination of moisture in feedstuffs
GB/T 6437 Determination of phosphorus in feed - Spectphotometry
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB 10648 Feed label
GB/T 13079-2006 Determination of total arsenic in feeds
GB/T 13080 Determination of lead in feeds - Method using atomic absorption spectrometry
GB/T 14699.1 Feeding stuffs - Sampling
GB/T 18634 Determination of feed phytase activity - Spectrothotometric method
3 Technical requirements
3.1 Appearance and property
This product is a white or light yellow powder.
3.2 Product specification
The product specifications can be determined according to the contract requirements, but the content of L-Ascorbate-2-phosphate (as measured by L-Ascorbate) shall not be less than 35%.
3.3 Identification
It shall conform to the maximum ultraviolet absorption wavelength of L-Ascorbate-2-phosphate, or the characteristics of the chemical reaction described in 4.4.
3.4 Technical indexes
The technical indexes shall meet those specified in Table 1.
Foreword II
1 Scope
2 Normative references
3 Technical requirements
4 Test methods
5 Inspection rules
6 Labeling, packaging, transportation, storage, and shelf life
Annex A (Informative) Chromatogram of L-Ascorbate-2-monophosphate
