ASTM D890-98

    Standard Test Method for Water in Liquid Naval Stores


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    1. Scope

    1.1 This test method covers the quantitative determination of dissolved or occluded water present in any proportion in light-colored, liquid naval stores, such as turpentine, pinene, dipentene, pine oil, refined tall oil, and tall oil fatty acids. It is based on the reaction between water and a complex reagent consisting of iodine, sulfur dioxide, pyridine, and methanol, whereby the iodine is converted to a colorless compound. The appearance of a persistent iodine color in the reaction mixture indicates the complete removal of free water by reaction with the reagent.

    Note 1-The Karl Fischer reagent prescribed in this test method is prepared in two solutions, in which form it is more stable and less affected by atmospheric moisture. However, the single solution reagent described in Test Methods D1364 and Method D1123 may be used if it is more readily available. The solvents and proportions specified in this test method should be employed if the single solution reagent is used.

    1.2 For dark-colored liquid naval stores products such as crude tall oil, an alternate method described in Test Methods D803 is recommended.

    1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.>


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D803 Test Methods for Testing Tall Oil

    D1364 Test Method for Water in Volatile Solvents (Karl Fischer Reagent Titration Method)


    ICS Code

    ICS Number Code 87.060.30 (Solvents)

    UNSPSC Code

    UNSPSC Code 31211800(Paint solvents and thinners)


    Referencing This Standard
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    DOI: 10.1520/D0890-98

    Citation Format

    ASTM D890-98, Standard Test Method for Water in Liquid Naval Stores, ASTM International, West Conshohocken, PA, 1998, www.astm.org

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