GB/T 25814-2022Cyanuric chloride (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 of Standardization Documents" drafted.

This document replaces GB/T 25814-2010 "Cyanuric Chloride". Compared with GB/T 25814-2010, except for structural adjustments and editorial changes Besides, the main technical changes are as follows.

--- Changed the mass fraction index of cyanuric chloride (see Chapter 4, Chapter 3 of the 2010 edition);

--- Changed the evaluation method of appearance (see 7.2, 5.2 of the 2010 edition);

--- Added the capillary melting point apparatus method for the determination of the initial melting point (see 7.3.2);

--- Increased the accuracy requirements for analytical balances (see 7.4.3.1);

--- Delete the "registered trademark" requirement in the logo (see 7.1 of the 2010 edition);

--- Changed the packaging regulations (see 9.3, 7.2 of the 2010 edition).

1 Scope

This document specifies the requirements for cyanuric chloride, safety information, sampling, test methods, inspection rules, as well as marking, labeling, packaging, transportation and storage.

This document applies to the quality control of cyanuric chloride products.

2 Normative references

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

GB 190 Dangerous Goods Packaging Marks

GB/T 191 Graphical signs of packaging, storage and transportation

GB/T 601 Standard Titration Solutions for Chemical Reagents

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

GB/T 2381-2013 Determination of insoluble matter content of dyes and dye intermediates

GB/T 2383-2014 Determination of sieving fineness of powdery dyes

GB/T 2384-2021 General method for determination of melting point range of dye intermediates

GB/T 6678-2003 General rules for sampling of chemical products

GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories

GB/T 8170-2008 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB 12268-2012 Dangerous Goods List

GB 12463 General Specifications for Transport Packaging of Dangerous Goods

GB 15258 Regulations for the preparation of chemical safety labels

GB 15603 General Rules for the Storage of Commonly Used Chemical Dangerous Goods

GB/T 16483 Chemical Safety Data Sheet Content and Item Sequence

GB/T 21877-2015 Determination of bulk density of dyes and dye intermediates

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Requirements

The quality of cyanuric chloride should meet the requirements of Table 1.

Note: See Appendix A for the basic information of cyanuric chloride.