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GB/T 23941-2025: Analytical methods of calcium chloride for industrial use
Status: Valid GB/T 23941: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23941-2025 | English | 209 |
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Analytical methods of calcium chloride for industrial use
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GB/T 23941-2025
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| GB/T 23941-2009 | English | 189 |
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Industrial chloride analysis
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GB/T 23941-2009
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PDF similar to GB/T 23941-2025
Basic data | Standard ID | GB/T 23941-2025 (GB/T23941-2025) | | Description (Translated English) | Analytical methods of calcium chloride for industrial use | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G10 | | Classification of International Standard | 71.060.01 | | Word Count Estimation | 10,147 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 23941-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23941-2025: Analytical methods of calcium chloride for industrial use---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT23941-2025
ICS 71.060.01
CCSG10
National Standard of the People's Republic of China
Replaces GB/T 23941-2009
Analysis method of industrial calcium chloride
Released on June 30, 2025
Implementation on January 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 23941-2009 "Analysis method for industrial calcium chloride". Compared with GB/T 23941-2009, except for the structural adjustment
Besides the editorial changes, the main technical changes are as follows.
a) The scope has been changed (see Chapter 1, Chapter 1 of the.2009 edition);
b) The test method for magnesium and alkali metal salts (calculated as NaCl) has been deleted (see Chapter 7 of the.2009 edition);
c) Added test methods for total alkali metal chloride content, iron content, total magnesium content and pH (see 4.5, 4.8, 4.9 and 4.10);
d) Added the visual turbidimetric method for determining sulfate (see 4.7.2).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Chemical Standardization (SAC/TC63).
This document was drafted by. Qingdao Alkali Industry Development Co., Ltd., Shandong Haihua Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute
Co., Ltd., Changshu Huayu Environmental Technology Co., Ltd., Da Qaidam Geely Chemical Co., Ltd., and Hubei Xingfa Chemical Group Co., Ltd.
The main drafters of this document are. Zhang Yanyan, Chang Gang, Wang Ying, Wang Guoping, Dong Ligang, Yu Yanling, Gong Mingming, Gao Yunrong, Zhang Kai, Wang Zhiwei,
Chen Shuang and Wang Fengkang.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2009 as GB/T 23941-2009;
---This is the first revision.
Analysis method of industrial calcium chloride
1 Scope
This document gives the general provisions and appearance inspection of the industrial calcium chloride analysis method, and describes the calcium chloride in the industrial calcium chloride analysis method.
Methods for determination of content, alkalinity, total alkali chloride, water-insoluble matter, sulfate, iron, total magnesium, and pH.
This document applies to industrial calcium chloride products in solid and solution form.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 3049-2006 General method for determination of iron content in industrial chemical products - 1,10-phenanthroline spectrophotometric method
GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 23769 General method for determination of pH value in aqueous solutions of inorganic chemical products
GB/T 23844-2019 General method for determination of sulfate in inorganic chemical products
HG/T 3696.1 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 1.Standard titration solutions
Preparation of liquid
HG/T 3696.3 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 3.Preparations and products
Preparation
3 Terms and Definitions
There are no terms or definitions that require definition in this document.
4 Test methods
Warning. Some of the reagents used in this test method are toxic or corrosive. Operators should be careful. If they splash on the skin, they should be removed immediately.
Rinse with water and seek medical treatment immediately if serious. When using flammable materials, do not use open flames to heat them.
4.1 General Provisions
The reagents and water used in this document, unless otherwise specified, refer to analytical reagents and those specified in GB/T 6682-2008.
The standard titration solutions, preparations and products used in the test shall be in accordance with HG/T 3696.1 and
Prepared in accordance with the provisions of HG/T 3696.3.
4.2 Appearance Inspection
Under natural light, the appearance of calcium chloride solid is determined by visual inspection on a white surface dish or white porcelain plate.
The appearance of the product was determined visually on a white porcelain plate.
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