Standard No.:	HG/T 2074-2011
Chinese Name:	保险粉（连二亚硫酸钠）
English Name:	Sodium hydrosulfite
Professional Classification:	G71 Chemical additive
ICS Classification:	71.100.01 Chemical product synthesis 87.060.10 Pigments and extenders
Issued by:
Issued on:	2011-12-20
Implemented on:	2012-07-01
Status:	VALID
Replace:	HG/T2074-2004 Sodium hydrosulfite
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
Delivery:	via email in

1 Scope

This standard specifies the requirements, safety information, sampling, test methods and inspection rules, as well as marking, labelling, packaging, transportation and storage of sodium hydrosulfite.

This standard is applicable to product quality control of sodium hydrosulfite.

Molecular formula: Na2S2O4

Relative molecular mass: 174.11 (as per IUPAC 2007 standard atomic weights)

CAS RN: 7775-14-6

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB 190 Packing Symbol of Dangerous Goods
GB/T 191 Packaging — Pictorial Marking for Handling of Goods (mod GB/T 191-2008, ISO 780:1997)
GB/T 601 Chemical Reagent — Preparations of Reference Titration Solutions
GB/T 603 Chemical Reagent — Preparations of Reagent Solutions for Use in Test Methods (neq GB/T 603-2002, ISO 6353-1:1982)
GB/T 6678-2003 General Principles for Sampling Chemical Products
GB/T 6682-2008 Water for Laboratory Use — Specifications and Test Methods (mod ISO 3696:1987)