ISO 22863-10:2021 PDF

Name: ISO 22863-10:2021 — Fireworks — Test methods for determination of specific chemical substances — Part 10: Nitrogen content in nitrocellulose by iron(II) sulfate titration
SKU: ISO 22863-10:2021
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Fireworks — Test methods for determination of specific chemical substances — Part 10: Nitrogen content in nitrocellulose by iron(II) sulfate titration

Название (английский):

ISO 22863-10:2021

Fireworks — Test methods for determination of specific chemical substances — Part 10: Nitrogen content in nitrocellulose by iron(II) sulfate titration

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 12 февраля 2021 г.
Издание:: ISO IS 22863 edition 1 version 1
ICS:: 71.100.30

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Описание (английский):

This document specifies the method for determination of the nitrogen content in nitrocellulose within pyrotechnic compositions of fireworks by iron(II) sulphate titration.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 22863-10:2021 - Fireworks - Test methods for determination of specific chemical substances - Part 10 specifies a standardized analytical method to determine the nitrogen content in nitrocellulose contained in pyrotechnic compositions (fireworks). The method isolates nitrocellulose from other nitrogen-containing ingredients, converts the cellulose nitrate to nitric acid using concentrated sulphuric acid, and quantifies nitrogen by iron(II) sulfate titration with potentiometric end‑point detection.

Key topics and technical requirements

Scope and principle: Measurement of nitrogen in nitrocellulose within fireworks formulations by titration after chemical release of nitric acid and potentiometric monitoring.

Sample preparation:

Drying, grinding and splitting the sample; typical starting mass examples provided (e.g., 10 g split into thirds, 3 g test portions).
Removal of soluble nitrates and other nitrogenous interferences by hot water reflux (iterative if required) and verification by infrared spectrometry.
Extraction of nitrocellulose using acetone (or a specified alternative solvent if acetone dissolves other ingredients), evaporation to obtain the last solid residue.

Reagents and solutions:

Use of analytical‑grade reagents (sulphuric acid, acetone, iron(II) sulfate heptahydrate, potassium nitrate for calibration).
Preparation of stabilized iron(II) sulfate titrant in acidic medium and storage in opaque vessels.

Apparatus:

pH/voltage meter with precision better than 0.1, platinum and reference electrodes, magnetic stirrer, reflux apparatus, balance (0.0001 g accuracy), ovens, agate mortar, etc.

Titration and calibration:

Calibration of the Fe(II) solution using a potassium nitrate standard and potentiometric titration to find the inflexion volume.
Potentiometric titration of the nitrocellulose digestion solution; calculation formulas provided to convert titrant volume to nitrogen percentage.

Reporting: Required test-report items and calculations for reproducible results.

Applications and users

Quality control and batch verification in fireworks and pyrotechnic manufacturing to ensure consistent performance and safety.

Laboratories performing compliance testing, certification bodies, and regulatory testing agencies assessing chemical content in pyrotechnic compositions.

R&D teams developing formulations who need accurate nitrocellulose nitrogen content for performance tuning and safety assessments.

Relevant SEO keywords: ISO 22863-10:2021, nitrocellulose nitrogen content, iron(II) sulfate titration, fireworks test methods, pyrotechnic composition analysis.

ISO 22863-10:2021 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

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