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  • ISO 685:1975

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Analysis of soaps — Determination of total alkali content and total fatty matter content

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  02-03-2020

    Language(s):  English, French

    Published date:  01-10-1975

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    The method consists in decomposition of the soap by a known volume of standard volumetric mineral acid solution, extraction and separation of the liberated fatty matter with light petroleum and determination of a total alkali content by titration of the excess of acid contained in the aqueous phase with a standard volumetric sodium hydroxide solution. After evaporation of the light petroleum from the extract, dissolution of the residue in ethanol and neutralization of the fatty acids with a standard volumetric potassium hydroxide solution. Evaporation of the ethanol and weighing of the soap formed to determine the total fatty matter content.

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    Committee ISO/TC 91
    Development Note Supersedes ISO 455 (04/2001) Also numbered as BS 1715-2.1(1989). (06/2005)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Withdrawn
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 1715-1(1989) : 1989 ANALYSIS OF SOAPS - GENERAL INTRODUCTION, SAMPLING, AND TEST FOR PRESENCE OF SYNTHETIC ANIONIC ACTIVE SURFACE ACTIVE AGENTS
    ISO 684:1974 Analysis of soaps — Determination of total free alkali
    BS 1715-1(1991) : 1991 ANALYSIS OF SOAPS - GENERAL INTRODUCTION, SAMPLING, AND TEST FOR PRESENCE OF SYNTHETIC ANIONIC ACTIVE SURFACE ACTIVE AGENTS

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 684:1974 Analysis of soaps — Determination of total free alkali
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