ISO 2869:1973

Overview

ISO 2869:1973 is an international standard issued by the International Organization for Standardization (ISO) that specifies a method for the determination of hydrolyzable and non-hydrolyzable anionic-active matter in detergents. This analytical standard is essential for laboratories and manufacturers in the detergent industry, providing a reliable procedure for analyzing surface active agents, specifically those that are hydrolyzable under alkaline conditions. The method involves titration using benzethonium chloride, following two-phase titration procedures, and enables precision in quantifying both hydrolyzable and non-hydrolyzable anionic-active substances.

Key Topics

• Surface Active Agents: Focus on anionic surfactants, which are common active components in detergents, including substances like dialkylsulphosuccinates and fatty acid glyceride sulphates.
• Hydrolyzable vs. Non-hydrolyzable Content: The standard distinguishes between components that break down under alkaline conditions and those that remain stable.
• Two-phase Titration Technique: Application of direct titration with benzethonium chloride according to ISO 2271.
• Alkaline Hydrolysis: Refluxing a sample under controlled alkaline conditions, allowing selective measurement of hydrolyzable matter.
• Result Calculation: Guidelines for calculating and reporting the relative amounts of hydrolyzable and non-hydrolyzable anionic-active matter by mass percentage or milli-equivalents per gram.

Applications

ISO 2869:1973 is widely applied in the following contexts:

• Quality Control in Detergent Manufacturing: Ensures consistency and compliance with product formulations by accurately determining the types and quantities of active ingredients.
• Product Development and Research: Supports R&D teams in analyzing new detergent formulas and modifying surfactant blends for optimal performance.
• Regulatory Compliance: Assists companies in meeting international regulatory requirements for surfactant composition and labeling.
• Chemical Analysis Laboratories: Offers standardized procedures for third-party testing and verification of surfactant properties in a variety of finished products.
• Environmental and Safety Assessments: Facilitates the identification and quantification of specific surfactants, crucial for environmental impact studies and safety evaluations.

Related Standards

Organizations and laboratories using ISO 2869:1973 may also reference the following related standards for comprehensive analysis and compliance:

• ISO 2271 - Surface active agents - Detergents - Determination of anionic-active matter by direct two-phase titration (cited as the two-phase titration reference method within ISO 2869).
• ISO/TC 91 Standards - Collection of ISO standards overseen by Technical Committee 91, focusing on surface active agents.
• IUPAC Methods - International Union of Pure and Applied Chemistry methods for chemical analysis of surfactants.
• Other ISO Detergent Standards - Standards covering additional analytical methods for non-ionic, cationic, and amphoteric surfactant assessment.

Practical Value

Implementing ISO 2869:1973 allows detergent manufacturers and quality control laboratories to:

• Maintain high standards of product reliability and consistency.
• Precisely differentiate between hydrolyzable and non-hydrolyzable surfactant components.
• Streamline laboratory workflows by adhering to internationally recognized testing protocols.
• Provide transparent, reproducible data for industry partners and regulatory bodies.
• Strengthen product formulations for enhanced cleaning efficiency and customer satisfaction.

By following ISO 2869:1973, organizations ensure that detergent products meet both functional and regulatory demands for surfactant composition, supporting global trade and consumer trust in cleaning products.