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  • ISO 28198:2009

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    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Vegetable fats and oils Determination of toluene insoluble matter

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

    Withdrawn date:  25-09-2018

    Language(s):  English, French, Russian

    Published date:  27-08-2009

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    ISO 28198:2009 specifies a method for the determination of the content of toluene insoluble matter (TIM) in lecithin formulations, which indicates the presence of impurities such as protein, carbohydrate-containing extraction residues and other solid contaminants. This method is applicable to all types of vegetable lecithin.

    The purpose of the method is to enable the analysis of lecithin under several regulations. Lecithin [Codex International Numbering System for Food Additives (INS) No. 322] is a generally permitted additive and the determination of the TIM is part of many specifications. The purity requirement with regard to TIM content is based on the method specified.

    Toluene is the replacement for the carcinogenic benzene, which was used in older methods.

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    Development Note DRAFT ISO/DIS 28198 is also available for this standard. (09/2017)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Withdrawn
    Superseded By

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    ISO 4793:1980 Laboratory sintered (fritted) filters — Porosity grading, classification and designation
    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    ISO 5555:2001 Animal and vegetable fats and oils — Sampling
    ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
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