GB7300.311-2025
Feed additives—Part 3: Minerals and their complexes (or chelates)—Monocalcium phosphate
饲料添加剂 第3部分：矿物元素及其络（螯）合物 磷酸二氢钙
GB 7300.311-2025 is an upcoming mandatory Chinese national standard for Feed additives—Part 3: Minerals and their complexes (or chelates)—Monocalcium phosphate. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Jan 1, 2027.
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 to feed additive monocalcium phosphate produced via chemical synthesis using wet-process phosphoric acid and calcium-containing compounds. It is specifically designed for the animal feed industry and does not apply to industrial or fertilizer-grade monocalcium phosphate. Manufacturers supplying mineral feed additives to the Chinese market must comply with these regulations.
Technical requirements
The standard outlines the chemical profile of monocalcium phosphate, identifying it by its specific molecular formula and relative molecular mass. It mandates that the product's appearance must be a white, gray, or slightly yellowish powder or granule. Suppliers must ensure the product passes specific identification reactions for both calcium ions and phosphate radicals. For physicochemical parameters, the standard sets strict thresholds for nutritional content and physical properties. This includes minimum limits for total phosphorus, water-soluble phosphorus, and calcium content. Additionally, it regulates the maximum allowable free moisture, specific pH ranges for solutions, and particle size fineness requirements for both powder and granular forms. The standard also enforces rigorous hygiene indicators to ensure animal safety. It establishes maximum concentration limits for heavy metals and toxic elements, specifically fluorine (F), total arsenic (As), lead (Pb), cadmium (Cd), and chromium (Cr). Compliance with these contaminant limits is mandatory for all batches entering the market.
Testing methods
The standard prescribes specific analytical methods to verify compliance. Total phosphorus and water-soluble phosphorus are determined using a gravimetric method with quinoline phosphomolybdate. Calcium content is measured via EDTA complexometric titration. Free moisture is assessed by oven drying, while pH is measured in an aqueous solution. Heavy metal and contaminant levels—including fluorine, arsenic, lead, cadmium, and chromium—are evaluated using corresponding national standard testing methods such as GB/T 13083 and GB/T 13079.
FAQs
What products are regulated under GB 7300.311-2025?
This standard specifically regulates monocalcium phosphate used as a feed additive. It applies to products synthesized chemically from wet-process phosphoric acid and calcium-containing compounds.
Are there any updates from the previous version of this standard?
Compared to the previous GB 22548-2017, the 2025 revision features updated requirements for appearance, fineness, and chromium (Cr) limits. It also modifies testing reagent concentrations and batch formation rules. Manufacturers previously complying with GB 22548 must transition to the new standard by January 1, 2027.
What are the inspection rules for batch production under this standard?
The standard mandates specific inspection protocols. Factory exit inspections must cover appearance, total phosphorus, water-soluble phosphorus, calcium, free moisture, and fluorine. Full type testing for all technical and hygiene parameters must be conducted at least every six months.
The summary above provides a high-level overview of GB 7300.311-2025. 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 7300.311-2025 today to access all detailed parameters, tables, and 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
Relationships
Replaces:GB 22548-2017 (Current)