GB/T 23940-2009 in English

《GB/T 23940-2009工业过硫酸盐产品的分析方法》由TC63（全国化学标准化技术委员会）归口，TC63SC1（全国化学标准化技术委员会无机化工分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了工业过硫酸盐产品的安全提示、一般规定、过硫酸盐含量、pH 值、铁含量、氯化物含量、水分、锰含量、重金属含量、铵盐含量、灼烧残渣含量和水不溶物含量的分析方法。
本标准适用于工业过硫酸盐产品,包括过硫酸铵、过硫酸钾、过硫酸钠等。

Analytical methods of persulfate products for industrial use

1 Scope

This standard specifies the safety instruction, general requirements, and analysis method of persulfate content, pH value, iron content, chloride content, moisture content, manganese content, heavy metal content, ammonium salt content, ignition residue content and water insoluble matter content of persulfate products for industrial use.

This standard is applicable to persulfate products for industrial use, including ammonium persulfate, potassium persulfate, sodium persulfate, etc.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.

GB/T 3049-2006 Chemical products for industrial use - General method for determination of iron content - 1,10-Phenanthroline spectrophotometric method (ISO 6685: 1982, IDT)
GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods (ISO 3696: 1987, MOD)
GB/T 9724 Chemical reagent - General rule for the determination of pH
HG/T 3696.1 Inorganic chemical products - Preparations of standard volumetric solutions for chemical analysis
HG/T 3696.2 Inorganic chemical products - Preparations of standard solutions for chemical analysis
HG/T 3696.3 Inorganic chemical products - Preparations of reagent solutions for chemical analysis

3 Safety instruction

Foreword i
1 Scope
2 Normative references
3 Safety instruction
4 General requirements
5 Determination of persulfate content
6 Determination of pH value
7 Determination of iron content
8 Determination of chloride content
9 Determination of moisture content
10 Determination of manganese content
11 Determination of heavy metal content
12 Determination of ammonium salt content
13 Ignition residue content
14 Water insoluble matter content