GB/T 23945-2009Inorganic chemicals for industrial use - General method for the determination of chloride content - Visible turbidimetric method (English PDF)

1 Scope

This method specifies the method for determination of inorganic chemical products in general chloride content than principle --- visual turbidity method, safety tips, general

Regulations, reagents, instruments, equipment, analytical procedures and the results of determination.

This method is applicable to the determination of trace amounts of inorganic chemical products chlorides. Detection range of 0.2mg/L ~ 4mg/L (Cl).

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)

Preparation of HG/T 3696.2 inorganic chemical products, chemical analysis of impurity standard solution

Preparations of HG/T 3696.3 inorganic chemical products, chemical analysis

Principle 3

Nitric acid solution, chloride ions and silver ions form insoluble silver chloride. When low chloride content, within a certain time was a silver chloride

Suspension, the solution was cloudy, chloride can be used for visual turbidimetry.

4 Safety Tips

Reagents used in this test method is corrosive, the operator must be careful! As splashed on the skin should immediately wash with water, Yan

In severe cases should be treated immediately.

5 General Provisions

This standard reagents and water, did not indicate when the other requirements, refer to analytically pure reagents and GB/T 6682-2008 specified three

Grade water.

Impurity standard solution, preparations and products needed to test, in the absence of other requirements specified according to HG/T 3696.2, HG/T 3696.3

Provisions prepared.

6 Reagents