GB/T 3051-2025: General methods for the determination of chloride content in inorganic chemical products - Mercurimetric method and ion chromatography method

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Scope

This document provides the general provisions, reagents or materials, instruments and
equipment for the mercurimetric method and ion chromatography method for the
determination of chloride content in inorganic chemical products. It also describes the
principles, experimental procedures, experimental data processing, and precision and
recovery of the mercurimetric method and ion chromatography method for the
determination of chloride content in inorganic chemical products.
This document applies to the determination of chloride content in inorganic chemical
products by the mercurimetric method and ion chromatography. For the mercurimetric
method, the specimens containing the chloride (as Cl) of 0.01 mg~80 mg shall be
determined by titrating in an ethanol solution, when the concentration of the mercuric
nitrate standard solution used is less than 0.02 mol/L. The ion chromatography method
has a determination range (mass fraction) of 0.0001%~1%.

Basic Data

Standard ID	GB/T 3051-2025 (GB/T3051-2025)
Description (Translated English)	General methods for the determination of chloride content in inorganic chemical products - Mercurimetric method and ion chromatography method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G10
Classification of International Standard	71.060.01
Word Count Estimation	14,128
Date of Issue	2025-08-01
Date of Implementation	2026-02-01
Older Standard (superseded by this standard)	GB/T 3051-2000
Issuing agency(ies)	State Administration for Market Regulation, Standardization Administration of China