ISO 1104:1977 PDF

Name: ISO 1104:1977 — Surface active agents — Technical sodium alkylarylsulphonates (excluding benzene derivatives) — Methods of analysis
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Surface active agents — Technical sodium alkylarylsulphonates (excluding benzene derivatives) — Methods of analysis

Название (английский):

ISO 1104:1977

Surface active agents — Technical sodium alkylarylsulphonates (excluding benzene derivatives) — Methods of analysis

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 1 ноября 1977 г.
Издание:: ISO IS 1104 edition 1 version 1
ICS:: 71.100.40

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Описание (английский):

Specifies the following determinations for the substances to be tested: Measurement of pH, determination of water content, determination of free alkalinity or free acidity, determination of matter extractable by light petroleum, determination of sodium alkylarylsulphonates content, determination of sodium sulphite content, determination of sodium sulphate content, determination of sodium chloride content. In annexes a general scheme of analysis and a rapid method for the determination of sodium alkylarylsulphonates are given.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 1104:1977 - Surface active agents: Technical sodium alkylarylsulphonates (excluding benzene derivatives) - Methods of analysis defines standardized laboratory procedures for the chemical analysis of technical-grade sodium alkylarylsulphonates (paste or powder). The standard excludes sodium alkylbenzenesulphonates and is not applicable to liquid products that may contain solvents or additives. Annexes provide a general scheme of analysis and a rapid determination method for sodium alkylarylsulphonates.

Key topics and technical requirements

ISO 1104:1977 specifies precise analytical determinations and recommended procedures, including:

Primary determinations

Measurement of pH (potentiometric method referenced to ISO 4316)
Water content by Karl Fischer (ISO 4317) or azeotropic distillation (ISO 4318), depending on water level
Free alkalinity or free acidity (titrimetric method, ISO 4314)
Matter extractable by light petroleum (hydrocarbon-soluble impurities)
Content of sodium alkylarylsulphonates using salting-out into 2‑propanol and solvent evaporation/isolation
Sodium sulphite (iodometric titration)
Sodium sulphate
Sodium chloride (potentiometric/argentometric approaches referenced)

Procedural highlights

Sample preparation: prepare a laboratory sample ~300 g per ISO 607 sampling guidance.
Extraction and separation: use 2‑propanol and salting-out with anhydrous sodium carbonate to separate sodium alkylarylsulphonates from non-sulphonated material; extract impurities with light petroleum (40–60 °C boiling range).
Reagents and apparatus: specifies analytical-grade reagents (e.g., 2‑propanol, dioxane, anhydrous sodium sulfate) and common laboratory equipment (separating funnels, fractionating column, ovens).
Performance notes: reproducibility targets are provided (e.g., differences between labs for certain determinations typically ≤ 1% or ≤ 0.2% as stated).

Applications and users

ISO 1104:1977 is intended for:

Quality control laboratories in surfactant manufacturing and chemical processing

R&D teams formulating detergents, emulsifiers and industrial surfactants

Third‑party testing labs performing compliance and batch-release testing

Procurement and specification engineers who require standardized analytical results for technical sodium alkylarylsulphonates

Practical benefits include harmonized test results, clear guidance on solvent extraction and salting‑out techniques, and comparable purity and impurity profiling across suppliers.

Related standards

ISO 607 (sample division)

ISO 4314, ISO 4316, ISO 4317, ISO 4318 (related titrimetric, pH and water determinations)

ISO 894 (methods for related surface active agents)

Keywords: ISO 1104:1977, sodium alkylarylsulphonates, surface active agents, analytical methods, Karl Fischer, salting out, 2‑propanol, light petroleum, water content, pH measurement.

ISO 1104:1977 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

26/30513410 DC

BS ISO 4316 Surface active agents — Determination of pH of aqueous solutions — Potentiometric method

ISO 4317:1991

Surface-active agents and detergents — Determination of water content — Karl Fischer method

ISO 4318:1978

Surface active agents and soaps — Determination of water content — Azeotropic distillation method

ISO 4314:1977

Surface active agents — Determination of free alkalinity or free acidity — Titrimetric method

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SIST ISO 894:1995

Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis