Standard No.:	GB 7300.313-2025
English Name:	Feed additives—Part 3: Minerals and their complexes (or chelates)—Dicalcium phosphate
Chinese Name:	饲料添加剂 第3部分：矿物元素及其络（螯）合物 磷酸氢钙
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR, SAC
Issued on:	2025-12-31
Implemented on:	2027-1-1
Status:	to be valid
Superseding:	GB 22549-2017 Feed additive - Dicalcium phosphate
Target Language:	English
File Format:	PDF
Word Count:	10000 words
Translation Price(USD):	300.0
Delivery:	via email in 1~5 business day

GB 7300.313-2025 Feed additives—Part 3: Minerals and their complexes (or chelates)—Dicalcium phosphate English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS CCS H National Standard of the People's Republic of China ‌GB 7300.313-2025 Feed additives - Minerals and their complexes (or chelates) - Dicalcium phosphate 饲料添加剂 第3部分：矿物元素及其络（螯）合物 磷酸氢钙 Issue date: 2025-12-31 Implementation date: 2027-01-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword Introduction 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification 5 Technical Requirements 6 Sampling 7 Test Methods 8 Inspection Rules 9 Labeling, Packaging, Transportation, Storage and Shelf Life Introduction Feed additives refer to substances added in small or trace amounts during the processing, manufacturing, and use of feed, including nutritional feed additives and general feed additives. For ease of use, and according to product type, GB 7300 "Feed Additives" is divided into the following 13 major categories: — Amino acids, amino acid salts and analogues; — Vitamins and vitamin-like substances; — Mineral elements and their complexes (chelates); — Enzyme preparations; — Microorganisms; — Non-protein nitrogen; — Antioxidants; — Preservatives, mold inhibitors and acidity regulators; — Coloring agents; — Flavoring and appetite-stimulating substances; — Binders, anti-caking agents, stabilizers and emulsifiers; — Polysaccharides and oligosaccharides; — Others. The product calcium hydrogen phosphate covered by this document belongs to the third major category: Mineral elements and their complexes (chelates). As calcium hydrogen phosphate is the thirteenth product standard published under this major category, this document is assigned the number GB 7300.313 and serves as Part 313 of GB 7300. Feed Additives — Part 3: Mineral Elements and Their Complexes (Chelates) — Calcium Hydrogen Phosphate 1 Scope This document specifies the classification, technical requirements, inspection rules, labeling, packaging, transportation, storage and shelf life of the feed additive calcium hydrogen phosphate. It also describes the sampling and test methods. This document applies to the feed additive calcium hydrogen phosphate produced by chemical synthesis from wet-process phosphoric acid and calcium-containing compounds according to a specific calcium-to-phosphorus ratio; or produced by hydrolysis using calcium phytate as the raw material. 2 Normative References The contents of the following documents constitute essential provisions of this document through normative reference. For dated references, only the edition corresponding to the date applies. For undated references, the latest edition (including any amendments) applies. GB/T 601 Chemical Reagents — Preparations of standard volumetric solutions GB/T 603 Chemical Reagents — Preparations of reagents and solutions for use in test methods GB/T 6003.1-2022 Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth GB/T 6682 Water for Analytical Laboratory Use — Specification and Test Methods GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values GB 10648 Feed Labeling GB/T 13079 Determination of Total Arsenic in Feeds GB/T 13080 Determination of Lead in Feeds — Atomic Absorption Spectrometry GB/T 13082 Determination of Cadmium in Feeds GB/T 13083 Determination of Fluorine in Feeds — Ion Selective Electrode Method GB/T 13088 Determination of Chromium in Feeds GB/T 14699 Feeding Stuffs — Sampling 3 Terms and Definitions No terms and definitions are stipulated in this document. 4 Classification Classified as Type I, Type II, and Type III according to different production processes. 5 Technical Requirements 5.1 Appearance and Properties Shall be white, gray, or slightly yellowish powder or granules. 5.2 Identification Shall comply with the identification reactions for calcium ion and phosphate radical. 5.3 Physicochemical Indicators Shall comply with the requirements specified in Table 1. 5.4 Hygiene Indicators Shall comply with the requirements specified in Table 2. 6 Sampling Carry out according to GB/T 14699. 7 Test Methods Warning: Some reagents used in the test methods are corrosive. Exercise caution during operation and take appropriate safety and protective measures. 7.1 General Provisions Unless otherwise specified, all reagents used shall be of analytical grade; all standard volumetric solutions and other reagents/solutions shall be prepared according to GB/T 601 and GB/T 603; water used in tests shall be Grade 3 water conforming to the provisions of GB/T 6682. 7.2 Appearance and Properties Place an appropriate amount of the sample on a clean, dry white porcelain plate. Observe its color and properties under natural light. 7.3 Identification 7.3.1 Reagents or Materials 7.3.1.1 Glacial acetic acid. 7.3.1.2 Hydrochloric acid solution: V(hydrochloric acid) : V(water) = 1:1. 7.3.1.3 Ammonia solution: V(ammonia water) : V(water) = 1:1. 7.3.1.4 Ammonium oxalate solution (100 g/L): Weigh 10 g of ammonium oxalate, dissolve in water, dilute to 100 ml, mix well. 7.3.1.5 Silver nitrate solution (170 g/L): Weigh 17 g of silver nitrate, dissolve in water, dilute to 100 ml, mix well. 7.3.2 Test Procedure 7.3.2.1 Calcium Ion Weigh approximately 0.1 g of the sample, add 5 ml of glacial acetic acid (7.3.1.1), boil to dissolve the sample. After cooling, filter. Add 5 ml of ammonium oxalate solution (7.3.1.4) to the filtrate; a white precipitate should form. Take a small amount of the precipitate; it should dissolve upon adding an appropriate amount of hydrochloric acid solution (7.3.1.2). 7.3.2.2 Phosphate Radical Weigh approximately 0.1 g of the sample, dissolve in 10 ml of water, add 1 ml of silver nitrate solution (7.3.1.5); a yellow precipitate should form. Take a small amount of the precipitate, add 2 ml of glacial acetic acid (7.3.1.1); the precipitate should not dissolve. Take a small amount of the precipitate; it should dissolve upon adding an appropriate amount of ammonia solution (7.3.1.3). 7.4 Total Phosphorus (as P) 7.4.1 Principle In an acidic medium, the phosphate radical in the sample solution reacts with added quinoline phosphomolybdate reagent to form quinoline phosphomolybdate precipitate. The precipitate is filtered, dried, and weighed to determine the total phosphorus content. 7.4.2 Reagents or Materials