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GB/T 649-2023: Chemical reagent - Potassium bromide
Status: Valid GB/T 649: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 649-2023 | English | 189 |
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3 days [Need to translate]
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Chemical reagent - Potassium bromide
| Valid |
GB/T 649-2023
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| GB/T 649-1999 | English | 239 |
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Chemical reagent. Potassium bromide
| Obsolete |
GB/T 649-1999
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| GB/T 649-1977 | English | RFQ |
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Chemical reagents--Potassium bromide
| Obsolete |
GB/T 649-1977
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PDF similar to GB/T 649-2023
Basic data | Standard ID | GB/T 649-2023 (GB/T649-2023) | | Description (Translated English) | Chemical reagent - Potassium bromide | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G62 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 10,131 | | Date of Issue | 2023-08-06 | | Date of Implementation | 2024-03-01 | | Older Standard (superseded by this standard) | GB/T 649-1999 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 649-2023: Chemical reagent - Potassium bromide---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.
ICS 71.040.30
CCSG62
National Standards of People's Republic of China
Replace GB/T 649-1999
chemical reagent potassium bromide
Published on 2023-08-06
2024-03-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 649-1999 "Chemical Reagent Potassium Bromide". Compared with GB/T 649-1999, except for structural adjustment and editing
In addition to sexual changes, the main technical changes are as follows.
---The technical requirements for the clarity test have been changed, from "qualified" to "≤No. 2" and "≤No. 4" (see Chapter 5, Chapter 5 of the.1999 edition)
Chapter 4);
---Added technical requirements and measurement methods for loss on drying (see Chapter 5, 6.6);
---The technical requirements and measurement methods of chloride have been changed. The technical requirements for analytical purity have been adjusted from "≤0.2%" to "≤0.1%". Chemical purity
The technical requirements are adjusted from "≤0.5%" to "≤0.2%" (see Chapter 5, 6.7, Chapter 4, 5.5 of the.1999 edition);
---Added technical requirements and measurement methods for reducing potassium permanganate substances (see Chapter 5, 6.18);
---Added the determination method of calcium flame atomic absorption spectrometry (6.14.2);
---Changed the inspection rules (see Chapter 7, Chapter 6 of the.1999 edition);
---Changed the packaging and logo (see Chapter 8, Chapter 7 of the.1999 edition).
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed by China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the Chemical Reagents Sub-Technical Committee of the National Chemical Standardization Technical Committee (SAC/TC63/SC3).
This document was drafted by. Xilong Science Co., Ltd., Beijing Institute of Chemical Reagents Co., Ltd.
The main drafters of this document. Wang Junbo, She Lajiao, Guo Yiqi, Wang Yuhua, Li Haiyang, Zhao Jifei, Han Baoying, Huang Pingqing, Lin Xudong,
Zhou Yubin, Wang Lianwang, Meng Xiandong.
This document was first published in 1965, revised for the first time in 1977, revised for the second time in.1999, and this is the third revision.
chemical reagent potassium bromide
1 Scope
This document specifies the properties, technical requirements, test methods, inspection rules, packaging and marking of the chemical reagent potassium bromide.
This document applies to the inspection of the chemical reagent potassium bromide.
Note. The chemical reagent potassium bromide has a molecular formula of KBr, a relative molecular mass of 119.00 (according to the 2022 international relative atomic mass), and a CAS number of 7758-02-3.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 601 Preparation of chemical reagent standard titration solution
GB/T 602 Preparation of standard solutions for determination of impurities in chemical reagents
GB/T 603 Preparation of preparations and products used in chemical reagent test methods
GB/T 609 General method for determination of total nitrogen content of chemical reagents
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 9723-2007 General principles for flame atomic absorption spectrometry of chemical reagents
GB/T 9724 General principles for determination of pH value of chemical reagents
GB/T 9728 General method for determination of chemical reagent sulfate
GB/T 9729 General method for determination of chemical reagent chloride
GB/T 9735-2008 General method for determination of heavy metals in chemical reagents
GB/T 9738 General method for determination of water-insoluble matter in chemical reagents
GB/T 9739 General method for determination of iron with chemical reagents
GB 15346 Chemical reagent packaging and marking
HG/T 3484-1999 Chemical reagent standard glass emulsion and clarity standard
HG/T 3921 Chemical reagent sampling and acceptance rules
3 Terms and definitions
There are no terms or definitions to be defined in this document.
4 traits
Potassium bromide is white crystal or powder, soluble in water.
5 Technical requirements
The technical requirements for potassium bromide are shown in Table 1.
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