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GB 7300.601-2020 English PDF (GB7300.601-2020)

GB 7300.601-2020 English PDF (GB7300.601-2020)

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GB 7300.601-2020: Feed additives -- Part 6: Non-protein nitrogen--Urea

This part of GB 7300 specifies the requirements, test methods, inspection rules, labeling, packaging, transportation, and storage for the feed additive urea. This part applies to urea produced by the reaction of ammonia and carbon dioxide and used as a non-protein nitrogen feed additive.
GB 7300.601-2020
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 65.120
B 46
Feed additives - Part 6: Non-protein nitrogen - Urea
ISSUED ON: MAY 29, 2020
IMPLEMENTED ON: DECEMBER 1, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Requirements ... 5
4 Test methods ... 5
5 Inspection rules ... 6
6 Labeling ... 7
7 Packaging, transportation, and storage ... 7
Feed additives - Part 6: Non-protein nitrogen - Urea
1 Scope
This part of GB 7300 specifies the requirements, test methods, inspection rules, labeling, packaging, transportation, and storage for the feed additive urea.
This part applies to urea produced by the reaction of ammonia and carbon dioxide and used as a non-protein nitrogen feed additive.
Chemical name: Carbamide
Molecular formula: CO(NH2)2
Relative molecular mass: 60.056 (calculated according to the 2016 International Standard Relative Atomic Mass)
Structural formula:
2 Normative references
The following documents are essential to the application of this document. For the dated referenced documents, only the versions with the indicated dates are applicable to this document; for the undated referenced documents, only the latest version (including all the amendments) is applicable to this document.
GB/T 2441.1 Determination of urea - Part 1: Total nitrogen content
GB/T 2441.2 Determination of urea - Part 2: Biuret content - Spectrophotometric method
GB/T 2441.3 Determination of urea - Part 3: Water content - Karl Fischer method GB/T 2441.5 Determination of urea - Part 5: Alkalinity - Titrimetric method GB/T 2441.7 Determination of urea - Part 7: Particle size - Sieve method GB/T 2441.9 Determination of urea - Part 9: Methylenediurea content -
Spectrophotometric method
4.3 Sensory characteristics
It is white or light-colored particles by visual inspection under natural light. 4.4 Determination of total nitrogen content
It shall be carried out according to the provisions of GB/T 2441.1.
4.5 Determination of biuret content
It shall be carried out according to the provisions of GB/T 2441.2.
4.6 Determination of moisture content
It shall be carried out according to the provisions of GB/T 2441.3.
4.7 Determination of methylenediurea
It shall be carried out according to the provisions of GB/T 2441.9.
4.8 Determination of lead content
It shall be carried out according to the provisions of GB/T 13080.
4.9 Determination of alkalinity
It shall be carried out according to the provisions of GB/T 2441.5.
4.10 Determination of particle size
It shall be carried out according to the provisions of GB/T 2441.7.
5 Inspection rules
5.1 The index items listed in the requirements of this part are all factory inspection items, the products shall be inspected batch by batch, and the quality certificate shall be attached.
5.2 Products that are produced and packaged with the same batch of raw materials in the same shift, and have the same process conditions, the same batch number and specifications, and the same quality certificates, are considered as one batch. 5.3 The number of sampling units shall be in accordance with the provisions of GB/T 14699.1. When sampling, insert the sampler into three-quarters of the depth of the material layer, mix the obtained sample evenly, divide about 500 g sample by quartering method, and place the sample into two dry, clean bottles with ground stoppers; paste a label on each bottle to indicate the name of the manufacturer, product name, production

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