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GB/T 39231-2020: Cerium chloride anhydrite
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Cerium chloride anhydrite
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GB/T 39231-2020
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Basic data | Standard ID | GB/T 39231-2020 (GB/T39231-2020) | | Description (Translated English) | Cerium chloride anhydrite | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H65 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 7,720 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-10-01 | | Quoted Standard | GB/T 606; GB/T 3050; GB/T 8170; GB/T 12690.1; GB/T 12690.2; GB/T 12690.3; GB/T 12690.4; GB/T 12690.5; GB/T 12690.6; GB/T 12690.7; GB/T 12690.8; GB/T 12690.9; GB/T 12690.10; GB/T 12690.11; GB/T 12690.12; GB/T 12690.13; GB/T 12690.14; GB/T 12690.15; GB/T 12 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the technical requirements, test methods, inspection rules, markings, packaging, transportation, storage and quality certificates of anhydrous cerium chloride. This standard applies to anhydrous cerium chloride prepared by chemical or other methods, used for smelting cerium and rich decorative metals, making scintillation crystal materials, catalytic materials, fluorescent materials and other functional materials. | GB/T 39231-2020: Cerium chloride anhydrite---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.
(Cerium Chloride Anhydrous)
ICS 77.120.99
H65
National Standards of People's Republic of China
Cerium Chloride Anhydrous
2020-11-19 released
2021-10-01 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 was proposed and managed by the National Rare Earth Standardization Technical Committee (SAC/TC229).
Drafting organizations of this standard. Baotou Shibo Rare Earth Extraction Equipment Co., Ltd., Baotou Jingrui New Material Co., Ltd., Yiyang Hongyuan Rare Earth
Limited Liability Company, Baotou Rare Earth Research Institute, Non-ferrous Metal Technology and Economic Research Institute.
The main drafters of this standard. Zhang Chunxin, Zhang Ruixiang, Xu Tao, Hao Xianku, Li Junfeng, Ma Xiandong, Hao Qian, Xie Ping, Xu Zongze, Chen Yuehua,
Wang Shuying.
Cerium Chloride Anhydrous
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, markings, packaging, transportation, storage and quality certificates of anhydrous cerium chloride.
This standard applies to anhydrous cerium chloride prepared by chemical methods or other methods, used for smelting cerium and cerium-rich metals, and making scintillation crystal materials
Materials, catalytic materials, fluorescent materials and other functional materials.
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 606 General method for moisture determination of chemical reagents Karl Fischer method
GB/T 3050 General Method for Determination of Chloride Content in Inorganic Chemical Products Potentiometric Titration
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 12690 (all parts) Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides
GB/T 14635 Methods for chemical analysis of rare earth metals and their compounds Determination of total rare earth
GB/T 16484.16 Chemical analysis methods of rare earth chloride and light rare earth carbonate. Part 16.Measurement of water insoluble matter in rare earth chloride
Fixed weight method
GB/T 17803 Rare earth product designation method
GB/T 18115.1 Methods for chemical analysis of rare earth impurities in rare earth metals and their oxides Cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, lanthanum
Determination of the amount of dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium
HJ537 Water Quality Determination of Ammonia Nitrogen Distillation-Neutralization Titration Method
3 Technical requirements
3.1 Product Classification
The products are divided into CeCl3(Anhydrous)-4N, CeCl3(Anhydrous)-3N, CeCl3(Anhydrous)-2N5 according to their chemical composition.
For each brand, the method of expressing the product brand should meet the requirements of GB/T 17803.
3.2 Description and examples of character grades
Anhydrous cerium chloride brand is composed of cerium chloride molecular formula, Arabic numerals and specific letters. There are two levels, the first level uses the
The molecular formula of the product is indicated. Anhydrous in brackets means that the product does not contain crystal water to show the difference from the hydrated cerium chloride crystal product;
The second level represents the grade (specification) of the product, and the relative purity of the cerium oxide in the cerium chloride accounts for the total rare earth. When the product is relatively pure
When the degree (quality score) is equal to or greater than 99%, the number of "9" in the quality score plus "N" is used to indicate ("N" is the English first word of the number 9
For example, 99% is expressed by 2N, and 99.995% is expressed by 4N5; the relative purity (mass fraction) of rare earths is the same but other components (including impurities)
Quality) For products with different percentage content requirements, capital letters A, B, C, and D can be added at the end of the group of brands to indicate the difference. in
Use "-" to separate the first level and the second level.
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