Standard No.:	GB/T 23940-2009
English Name:	Analytical methods of persulfate products for industrial use
Chinese Name:	工业过硫酸盐产品的分析方法
Chinese Classification:	G10    Inorganic chemicals in general
Professional Classification:	GB    National Standard
ICS Classification:	71.060.01 71.060.01    Inorganic chemicals in general 71.060.01
Issued by:	CPCIA
Issued on:	2009-6-2
Implemented on:	2010-2-1
Status:	superseded
Superseded by:	GB/T 23940-2021 Analytical methods of persulfate products for industrial use
Superseded on:	2022-3-1
Abolished on:	2022-03-01
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

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