ISO 6842:1989 PDF

Name: ISO 6842:1989 — Surface active agents — Sulfated ethoxylated alcohols and alkylphenols — Determination of total active matter content
SKU: ISO 6842:1989
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Surface active agents — Sulfated ethoxylated alcohols and alkylphenols — Determination of total active matter content

Название (английский):

ISO 6842:1989

Surface active agents — Sulfated ethoxylated alcohols and alkylphenols — Determination of total active matter content

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 2
Дата публикации:: 21 сентября 1989 г.
Издание:: ISO IS 6842 edition 2 version 1
ICS:: 71.100.40

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Описание (английский):

A test portion is boiled under reflux with ethanol in the presence of sodium sulphate. The solution is filtrated, the filtrate evaporated, and the residue weighed. Any sodium chloride present is determined by dissolution of the residue in aqueous acetone and titration with a standard volumetric silver nitrate solution. The mass of the residue is corrected for the sodium chloride content.

Abstract

Похожие стандарты

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Overview

ISO 6842:1989 specifies a standardized method for determining the total active matter content in commercial surface active agents, specifically sulfated ethoxylated alcohols and alkylphenols. These compounds are widely used in detergents, cleaning agents, and industrial processes. The standard outlines detailed procedures for sample preparation, chemical analysis, and calculation to achieve accurate and repeatable results across laboratories.

This international standard, developed by ISO’s Technical Committee for Surface Active Agents (ISO/TC 91), ensures consistency in measuring the total content of organic material soluble in ethanol - including both anionic and non-ionic fractions - within these surfactants.

Key Topics

Scope of Application: Applies to neutralized products resulting from the sulfation of ethoxylated alcohols and alkylphenols, such as alkyl oxyethylene sulfates and alkylphenol oxyethylene sulfates.

Analytical Principle:

Test portion is boiled under reflux with ethanol and sodium sulfate.
The solution is filtered, filtrate evaporated, and residue weighed.
Any sodium chloride in the residue is determined via titration with silver nitrate after dissolving in aqueous acetone.
The final result corrects the residue mass for sodium chloride content, yielding the total active matter.

Reagents and Apparatus: Detailed list of necessary chemicals (ethanol, sodium sulfate, acetone, silver nitrate) and specialized lab equipment (conical flask, rotary evaporator, condenser).

Sample Preparation & Procedure: Emphasizes standardized sample handling, stepwise chemical operations, and precise measurement to ensure accurate active matter determination.

Calculation and Precision: Final results are expressed as a percentage by mass, with formulas and repeatability data provided to ensure reliability.

Applications

The standardized method in ISO 6842:1989 is vital for:

Quality Control: Enables manufacturers and laboratories to reliably determine the total active matter content in raw materials and finished products, ensuring consistency and compliance with industry specifications.

Research and Development: Provides a reference procedure for formulation and comparative studies involving surfactants in cosmetics, cleaning, and industrial applications.

Regulatory Compliance: Assists organizations in meeting local and international regulations concerning chemical analysis and product labelling of detergents and surface active agents.

Trade and Procurement: Establishes a uniform basis for technical specifications and supplier agreements regarding surfactant material quality.

Related Standards

Organizations using ISO 6842:1989 can benefit from familiarity with these related standards:

ISO 607:1980

Surface active agents and detergents - Methods of sample division
Specifies procedures for the collection, handling, and storage of laboratory samples for accurate analysis.

ISO/TC 91 Standards

Covers additional test methods, terminology, and specification criteria relevant to surface active agents and detergents.

Other Analytical Standards

Standards addressing the determination of specific active matter types (anionic, non-ionic) or alternative methods for different surfactant classes.

By adhering to ISO 6842:1989, laboratories and manufacturers can ensure high-quality, comparable results in the determination of total active matter content in sulfated ethoxylated alcohols and alkylphenols across various sectors.

ISO 6842:1989 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

ISO 607:1980

Surface active agents and detergents — Methods of sample division

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