GB 7300.602-2025 Feed additives—Part 6: Non-protein nitrogen—Diammonium hydrogen phosphate English, Anglais, Englisch, Inglés, えいご
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ICS
CCS H
National Standard of the People's Republic of China
GB 7300.602-2025
Feed additives - Part 6: Non-protein nitrogen - Diammonium hydrogen phosphate
饲料添加剂 第6部分： 非蛋白氮 磷酸氢二铵
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 Chemical Name, Chemical Formula, Relative Molecular Mass and Structural Formula
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 diammonium phosphate covered by this document belongs to the sixth major category: Non-protein nitrogen. As diammonium phosphate is the second product standard published under this major category, this document is assigned the number GB 7300.602 and serves as Part 602 of GB 7300.
Feed Additives — Part 6: Non-protein Nitrogen — Diammonium Phosphate
1 Scope
This document provides the chemical name, chemical formula, relative molecular mass and structural formula of diammonium phosphate. It specifies the technical requirements, inspection rules, labeling, packaging, transportation, storage and shelf life of the feed additive diammonium phosphate. It also describes the sampling and test methods.
This document applies to the feed additive diammonium phosphate produced by chemical synthesis using liquid ammonia and phosphoric acid (including wet-process phosphoric acid) as raw materials.
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 1886.331-2021 National Food Safety Standard — Food Additive — Diammonium Phosphate
GB/T 5917.1 Determination of Feed Particle Size — Sieving Method Using Two Sieves
GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 10209.1 Determination of Monoammonium Phosphate and Diammonium Phosphate — Part 1: Total Nitrogen Content
GB/T 10209.3 Determination of Monoammonium Phosphate and Diammonium Phosphate — Part 3: Water Content
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 13083 Determination of Fluorine in Feeds — Ion Selective Electrode Method
GB/T 14699 Feeding Stuffs — Sampling
NY/T 4689 Test for Limit of Heavy Metals in Feed Additives — Turbidimetric Method
3 Terms and Definitions
No terms and definitions are stipulated in this document.
4 Chemical Name, Chemical Formula, Relative Molecular Mass and Structural Formula
4.1 Chemical name: Diammonium phosphate
4.2 Chemical formula: (NH₄)₂HPO₄
4.3 Relative molecular mass: 132.06 (calculated based on the 2024 international relative atomic masses)
4.4 Structural formula:
5 Technical Requirements
5.1 Appearance and Properties
Shall be white crystals, crystalline powder or granules.
5.2 Identification
Shall comply with the identification test characteristics for ammonium ion and phosphate ion.
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
7.1 Appearance and Properties
Place an appropriate amount of the sample on a clean, dry white porcelain plate. Observe its color and form under natural light.
7.2 Identification
7.2.1 Ammonium Ion
Carry out according to the provisions of A.2.2.2 in GB 1886.331-2021.
7.2.2 Phosphate Ion
Carry out according to the provisions of A.2.2.1 in GB 1886.331-2021.
7.3 Diammonium Phosphate [(NH₄)₂HPO₄] Content
Carry out according to the provisions of A.3 in GB 1886.331-2021.
7.4 Total Nitrogen (N)
Carry out according to the provisions of GB/T 10209.1.
7.5 Moisture
Carry out according to the provisions of GB/T 10209.3.
7.6 pH (10 g/L Aqueous Solution)
Carry out according to the provisions of A.4 in GB 1886.331-2021.
7.7 Fineness (Passing Rate through 2 mm Test Sieve)
Carry out according to the provisions of GB/T 5917.1.
7.8 Fluorine (F)
Carry out according to the provisions of GB/T 13083.
7.9 Lead (Pb)
Carry out according to the provisions of GB/T 13080.
7.10 Total Arsenic (as As)
Carry out according to the provisions of GB/T 13079.
7.11 Heavy Metals
Carry out according to the provisions of NY/T 4689.
8 Inspection Rules
8.1 Lot Formation
Products of the same specification, produced from the same materials, using the same production process, in continuous production or during the same shift, constitute a batch. However, the quantity per batch shall not exceed 300 t.
