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GB/T 20614-2026Fireworks - Determination of perchlorate content in pyrotechnic composition (English PDF)

烟花爆竹　烟火药中高氯酸盐含量的测定

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

February 27, 2026

Implementation date

June 1, 2026

Scope

GB/T 20614-2026 is the English-translated version of 烟花爆竹　烟火药中高氯酸盐含量的测定.

GB/T 20614-2026 is the Chinese standard "Fireworks - Determination of perchlorate content in pyrotechnic composition". Its scope clause reads: This document describes a method for determining the perchlorate content in fireworks and firecracker gunpowder.

This document applies to the determination of perchlorate content in fireworks and firecracker gunpowder. Its clauses include terms and definitions; principles; reaction formula.

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Document preview — GB/T 20614-2026

National Standard of the People's Republic of China

ICS: 71.100.30
Classification: Y 88
Replacing: GB/T 20614-2006

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4.Principle
5.Reaction Formula
6.Reagent
7.Equipment and Tools
8.Sample Preparation
9.Analysis Step
10 Result Calculation
11.Allowable difference
Appendix A (Informative) Determination of Chlorate Content

1 Scope

This document describes a method for determining the perchlorate content in fireworks and firecracker gunpowder.

This document applies to the determination of perchlorate content in fireworks and firecracker gunpowder.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 601 Preparation of Standard Titration Solutions for Chemical Reagents

GB/T 3051-2000 General Method for Determination of Chloride Content in Inorganic Chemical Products - Mercury Measurement

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

GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values

AQ4115 General Guidelines for Preventing Static Electricity in Fireworks and Firecrackers

SN/T 0306.4-2024 Inspection Procedures for Exported Fireworks and Firecrackers Part 4.Safety Performance Inspection

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined.

4 Principles

After appropriate pretreatment, the sample was dissolved in hot water and filtered. The filtrate was evaporated and then ignited at high temperature. The residue was dissolved in water and then treated with sulfuric acid.

Ferric ammonium was used as an indicator, and the solution was titrated with ammonium thiocyanate standard titration solution until it turned a pale reddish-brown color. A blank test was performed simultaneously. The results of the two titrations were analyzed.

The perchlorate content in the sample is calculated by the difference in the volume of ammonium thiocyanate standard titration solution consumed.

5 Reaction Formula

The reaction formula is as follows.

KClO4

KCl 2O2->

Cl- Ag · AgCl->

Ag SCN- \u202a� \u202a�AgSCN->

Fe36SCN- [Fe(SCN)6]3- […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 20614

Edition	Title	Revision	Status
GB/T 20614-2026	Fireworks - Determination of perchlorate content in pyrotechnic composition	current edition	Current
GB/T 20614-2006	Fireworks - Determination of perchlorate content in pyrotechnic composition	previous edition	Superseded

This page sells the current edition, GB/T 20614-2026. Earlier editions are listed for reference only.

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