GB7300.308-2025
Feed additives—Part 3: Minerals and their complexes (or chelates) —Zinc threoninate chelate
饲料添加剂 第3部分：矿物元素及其络(螯)合物 苏氨酸锌螯合物
GB 7300.308-2025 is an upcoming mandatory Chinese national standard for Feed additives—Part 3: Minerals and their complexes (or chelates) —Zinc threoninate chelate. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Jul 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies specifically to feed additive zinc threoninate chelate products synthesized from threonine and zinc oxide. It is mandatory for manufacturers producing mineral element feed additives for the Chinese market. The regulation covers technical requirements, testing rules, labeling, packaging, and storage for this specific zinc chelate product.
Technical requirements
The standard defines the chemical identity of the product, specifying the molecular formula as C8H16N2O6Zn·2H2O with a relative molecular mass of 337.63. It mandates that the product must appear as colorless semi-transparent crystals or a whitish crystalline powder without off-odors. Identification tests must confirm the presence of threonine, zinc ions, and the specific chelate structure. For physicochemical parameters, the standard sets strict thresholds for active ingredient content, including minimum limits for zinc threoninate (calculated as Zn) and total threonine. It also enforces a minimum chelation rate to ensure product efficacy, alongside limits for loss on drying and specific particle size pass rates. Regarding hygiene and safety, the regulation establishes maximum allowable limits for heavy metals and toxic elements, specifically total arsenic, lead, and cadmium. Compliance with these hygiene limits is critical for animal feed safety.
Testing methods
The standard outlines specific analytical procedures, including EDTA complexometric titration for determining zinc content and chelation rates. Total threonine is measured using an amino acid analyzer (as the arbitration method) or the Kjeldahl method for nitrogen determination. Additionally, Infrared Spectroscopy (IR) is utilized to verify the chelate structure. Heavy metals are tested using atomic absorption spectroscopy and colorimetric methods referenced in companion GB/T standards.
FAQs
What products are regulated under GB 7300.308-2025?
This standard specifically regulates zinc threoninate chelate used as a feed additive. It applies to products synthesized chemically from threonine and zinc oxide.
When does GB 7300.308-2025 become effective and is it a new standard?
It is a newly released standard published on June 30, 2025, and will become mandatory starting July 1, 2026. It establishes the official national requirements for this specific mineral chelate product.
How does GB 7300.308-2025 relate to other testing standards?
The standard references several methodologies aligned with international practices, such as using the Kjeldahl method for nitrogen determination (GB/T 6432) and atomic absorption spectroscopy for lead testing (GB/T 13080). However, it sets specific Chinese national limits for heavy metals and chelation rates that must be strictly followed for CCC or market access.
The summary above provides a high-level overview of GB 7300.308-2025. To ensure complete compliance for your feed additive products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 7300.308-2025 today to access all detailed parameter tables, chemical formulas, and step-by-step testing procedures.
Applicability hints
- Type
- Product
- CCS
- B46
- ICS
- 65.120
- Competent department
- Ministry of Agriculture and Rural Affairs
- Technical committee
- National Technical Committee on Feed Industry of Standardization Administration of China