GB/T 12737-2008
Chemical products for industrial use.General method for determination of traces of sulphur compounds,as sulphate,by reduction and titrimetry (English Version)
- Standard No.
- GB/T 12737-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 12737-2008
- Replace
- GB/T 12737-1991
- Scope
- This standard specifies the general method for the determination of trace sulfur compounds expressed as sulfate radicals in industrial chemical products - reduction and titration. The method for treating the sample to convert the sulfur compound to sulfate should be specified in the standard for the chemical product to which this method is applicable, with any modifications that may be required to the general procedure, if necessary. This method is suitable for determining the content of sulfate (SO42-) in the solution or directly in the sample in some cases. The range is 4.5μg～450μg. The water content in the test solution taken for the determination shall not exceed 2mL. The content of interfering elements in the test sample should not exceed the allowable limit, which is stipulated in the standards of the relevant chemical products using this method. The sulfur compounds in the product should exist in the form of sulfate radicals, and appropriate pretreatment should be carried out for samples containing other sulfur compounds to obtain sulfate radical-containing test solutions. The expected precision of this method is ±5%.
GB/T 12737-2008 history
- 2008 GB/T 12737-2008 Chemical products for industrial use.General method for determination of traces of sulphur compounds,as sulphate,by reduction and titrimetry
- 1991 GB/T 12737-1991 Chemical products for industrial use--General method for determination of traces of sulfate by reduction and titrimetry
