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GB/T 12684-2018 English PDF

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GB/T 12684-2018: Boron compound for industrial use -- Methods of test
Status: Valid

GB/T 12684: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 12684-2018English359 Add to Cart 4 days [Need to translate] Boron compound for industrial use -- Methods of test Valid GB/T 12684-2018
GB/T 12684-2006English439 Add to Cart 3 days [Need to translate] Methods of test for boron compound for industrial use Obsolete GB/T 12684-2006
GB/T 12684.1-1990English199 Add to Cart 2 days [Need to translate] Boric acid for industrial use--Determination of boric acid content Obsolete GB/T 12684.1-1990

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Basic data

Standard ID GB/T 12684-2018 (GB/T12684-2018)
Description (Translated English) Boron compound for industrial use -- Methods of test
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G10
Classification of International Standard 71.040.40
Word Count Estimation 18,124
Date of Issue 2018-06-07
Date of Implementation 2019-01-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 12684-2018: Boron compound for industrial use -- Methods of test

---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.
Boron compound for industrial use--Methods of test ICS 71.040.40 G10 National Standards of People's Republic of China Replace GB/T 12684-2006 Industrial boride analysis method Published on.2018-06-07 2019-01-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 12684-2006 "Industrial Boride Analysis Method", compared with GB/T 12684-2006, except for editorial The main technical changes outside the revision are as follows. --- Increased the content of impurity elements (sodium, iron, calcium, magnesium, aluminum, silica, arsenic) in industrial boric acid, anions (fluorine, chlorine, bromine, sulfate, Determination of nitrate and phosphate content and boron (10B/11B) abundance ratio (see Chapter 3); --- Removed the reduction titration method in the determination of sulfate content in industrial boric acid (see 4.3.1 of.2006 edition); --- Removed the determination of ammonia content in industrial boric acid (see.2006 edition of 4.6); --- Removed the normative appendix "Determination of boric acid content in boric acid boronic acid" (see Appendix A of the.2006 edition). This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Chemical Standardization Technical Committee of the Inorganic Chemical Subcommittee (SAC/TC63/SC1). This standard was drafted. Dalian Jinma Boron Technology Group Co., Ltd., Dalian University of Technology, Qingdao inspection and quarantine technology development Xin, Qinghai Salt Lake Research Institute of Chinese Academy of Sciences, CNOOC Tianjin Chemical Research and Design Institute Co., Ltd. The main drafters of this standard. Wang Hongtao, Ning Guiling, Cui He, Li Jinli, Yang Yingshan, Tian Peng, Wang Min, Zhao Zuliang, Wang Yan. The previous versions of the standards replaced by this standard are. ---GB/T 12684.1~GB/T 12684.8-1990; ---GB/T 12684-2006. Industrial boride analysis method Caution - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions. question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations. In this test method The sample and some of the reagents used are toxic, flammable or corrosive. Care should be taken during handling. If splashed on the skin, immediately flush with water. Wash, severe cases should be treated immediately; when using flammable products, it is strictly prohibited to use open flame heating. High pressure gas cylinders used in this test method shall be pressed at high pressure. Cylinder safety procedures operate; the inductively coupled plasma emission spectrometer should not open the torch chamber after igniting the plasma.

1 Scope

This standard specifies the boric acid content, water insoluble content, sulfate content, heavy metal content, arsenic content and impurity elements in industrial boric acid. (sodium, iron, calcium, magnesium, aluminum, silica) content, anion (fluorine, chlorine, bromine, sulfate, nitrate, phosphate) and boron (10B/11B) abundance Ratio, industrial boric acid, boron oxide and disodium tetraborate chloride content, industrial boric acid, boron oxide, disodium tetraborate, sodium perborate and crude sodium borate Method for determination of iron content. This standard applies to the determination of the content of the corresponding substances in industrial boride.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 3049-2006 General method for determination of iron content of industrial chemical products 1,10-phenanthroline spectrophotometric method GB/T 3051-2000 General method for determination of chloride content in inorganic chemical products GB/T 6682-2008 Analytical laboratory water specifications and test methods HG/T 3696.1-2011 Preparation of standard solutions, preparations and products for chemical analysis - Part 1 . Standard Preparation of titration solution Standard Practice for Preparation of Standard Solutions, Preparations and Products for Chemical Analysis of Inorganic Chemical Products - Part 2. Impurity Standard Dissolution Liquid preparation Preparation of standard solutions, preparations and products for chemical analysis - Part 3. Preparations and preparations Preparation

3 test methods

3.1 General provisions The reagents and water used in this standard refer to the analytical reagents and the three specified in GB/T 6682-2008 when no other requirements are specified. Grade water. The standard titration solution, impurity standard solution, preparation and products used in the test are all specified when no other requirements are specified. Prepared as specified in HG/T 3696.1, HG/T 3696.2, HG/T 3696.3. 3.2 Determination of boric acid content in industrial boric acid 3.2.1 Principle Boric acid is reinforced with mannitol (or invert sugar) and titrated with sodium hydroxide standard titration solution using phenolphthalein as an indicator.

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