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GB/T 29401-2020: Sulfur coated urea (SCU)
Status: Valid GB/T 29401: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 29401-2020 | English | 299 |
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Sulfur coated urea (SCU)
| Valid |
GB/T 29401-2020
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| GB 29401-2012 | English | 639 |
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[GB/T 29401-2012] Sulfur coated urea (SCU)
| Obsolete |
GB 29401-2012
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PDF similar to GB/T 29401-2020
Basic data | Standard ID | GB/T 29401-2020 (GB/T29401-2020) | | Description (Translated English) | Sulfur coated urea (SCU) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G21 | | Classification of International Standard | 65.080 | | Word Count Estimation | 16,159 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Older Standard (superseded by this standard) | GB/T 29401-2012 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 29401-2020: Sulfur coated urea (SCU)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Sulfur coated urea (SCU)
ICS 65.080
G21
National Standards of People's Republic of China
Replace GB/T 29401-2012
Sulfur-coated urea
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 29401-2012 "Sulfur Coated Urea". Compared with GB/T 29401-2012, except for editorial changes, the main
The technical changes are as follows.
--- Modify the term "initial nutrient release rate" to "a day nitrogen dissolution rate" (see 3.3, see 3.4 in the.2012 edition), change the term "static nitrogen
"Dissolution rate" was revised to "Seven-day nitrogen dissolution rate" (see 3.4, 3.5 in the.2012 edition);
---Modified some technical requirements of Type I and Type II products (see Table 1, Table 1 of the.2012 edition);
--- Increase the limit requirements for toxic and hazardous substances in products (see 4.4);
---The test method of biuret content has been added (see 6.6);
---The test method of calcium and magnesium content has been added (see 6.10.1);
---Added the test method of trace element content (see 6.11);
---The packaging specifications of 10.0kg and 5.0kg have been deleted (see 8.1 in the.2012 edition).
This standard was proposed by the China Petroleum and Chemical Industry Federation.
This standard is organized by the National Fertilizer and Soil Conditioner Standardization Technical Committee New Fertilizer Sub-Technical Committee (SAC/TC105/SC5)
Focus.
Drafting organizations of this standard. Shanghai Research Institute of Chemical Industry Co., Ltd., Kingenta Ecological Engineering Group Co., Ltd., Shanghai Institute of Chemical Technology
Co., Ltd., Shanghai Huanqiu Engineering Co., Ltd.
The main drafters of this standard. Duan Lulu, Chen Deqing, Fan Bin, Huang Jing, Yang Xu, Li Yuepeng, Baiyun, Midsummer, Zhu Ming, Liu Yuandan.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 29401-2012.
Sulfur-coated urea
1 Scope
This standard specifies sulfur-coated urea, sulfur-coated slow-release nitrogen fertilizer, sulfur-coated slow-release compound fertilizer, and slow-release sulfur-coated urea
The terms and definitions, technical requirements, sampling, test methods, inspection rules, labels and quality certificates, packaging, transportation and storage of blended fertilizers.
This standard applies to the use of sulfur as the main wrapping material to wrap granular urea to achieve slow release of nitrogen.
The so-called sulfur-coated urea slow-release fertilizer includes but is not limited to sulfur-coated urea, sulfur-coated urea, sulfur-coated urea, sulfur-coated urea, sulfur-coated urea, and the like. and also
It is suitable for sulfur-coated slow-release nitrogen fertilizer, sulfur-coated slow-release compound fertilizer and slow-release mixed fertilizer containing part of sulfur-coated urea.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 2441.1 Determination of Urea Part 1.Total Nitrogen Content
GB/T 6679 General Rules for Sampling of Solid Chemical Products
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 8569 Solid chemical fertilizer packaging
GB/T 8572 Determination of total nitrogen content in compound fertilizers by titration method after distillation
GB/T 8577 Determination of free water content in compound fertilizers Karl Fischer method
Determination of copper, iron, manganese, zinc, boron, and molybdenum content in GB/T 14540 compound fertilizer
GB 18382 Fertilizer labeling content and requirements
Determination of calcium, magnesium and sulfur content in GB/T 19203-2003 compound fertilizer
GB/T 21633 Blended fertilizer (BB fertilizer)
GB/T 22924 Determination of Biuret Content in Compound Fertilizer (Compound Fertilizer)
GB/T 24891 Determination of particle size of compound fertilizer
GB/T 34764 Determination of copper, iron, manganese, zinc, boron and molybdenum content in fertilizers by plasma emission spectrometry
GB 38400 Limit requirements for toxic and hazardous substances in fertilizers
HG/T 2843 Commonly used standard titration solution, standard solution, reagent solution and indicator solution for chemical analysis of fertilizer products
NY/T 1117 Determination of calcium, magnesium, sulfur and chlorine content in water-soluble fertilizer
ISO 17322 Test method for sulfur-coated urea for fertilizers and soil conditioners
ISO 18643 Fertilizers and soil conditioners-Determination of biuret content in urea-based fertilizers by HPLC method
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Sulfur-coated urea
A coated slow-release fertilizer made of sulfur-coated granular urea.
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