GB/T 20783-2023Stable chlorine dioxide solution (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document replaces GB/T 20783-2006 "Stable Chlorine Dioxide Solution". Compared with GB/T 20783-2006, except for structural adjustment In addition to editorial changes, the main technical changes are as follows:

---Deleted the molecular formula and relative molecular mass (see Chapter 1 of the 2006 edition);

--- Changed the terms and definitions (see Chapter 3, Chapter 3 of the 2006 edition);

--- Deleted the product classification (see Chapter 4 of the 2006 edition);

--- Changed the indicators (see 4.2, 5.3 of the 2006 edition);

--- Changed the determination method of arsenic content (see 5.8, 6.4 of the 2006 edition);

--- Changed the determination method of lead content (see 5.9, 6.5 of the 2006 edition).

1 Scope

This document specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of stable chlorine dioxide solution.

This document applies to stabilized chlorine dioxide solutions.

Note: This product is mainly used for industrial water, wastewater and sewage treatment, and can also be used for drinking water, medical and health industries, public environment, food processing, animal husbandry and Sterilization, algae removal, disinfection and preservation in aquaculture, planting and other fields.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 191-2008 Packaging, storage and transportation icon marks

Preparation of GB/T 601 Chemical Reagent Standard Titration Solution

GB/T 602 Preparation of Standard Solution for Determination of Impurities in Chemical Reagents

Preparation of preparations and products used in GB/T 603 test methods for chemical reagents

GB 5009.74 National Food Safety Standard Test for Limits of Heavy Metals in Food Additives

GB 5009.76 National Food Safety Standard Determination of Arsenic in Food Additives

GB/T 6678 General Rules for Sampling of Chemical Products

GB/T 6682-2008 Analytical laboratory water specifications and test methods

GB/T 8170-2008 Numerical rounding off rules and expression and determination of limit values

GB/T 26366-2021 Hygienic Standard for Chlorine Dioxide Disinfectant

GB/T 38499-2020 Disinfectant Stability Evaluation Method

3 Terms and Definitions

The following terms and definitions apply to this document.