ASTM D7358 - 07(2013)

    Standard Test Method for Water Content of Paints by Quantitative Calcium Hydride Reaction Test Kit

    Active Standard ASTM D7358 | Developed by Subcommittee: D01.21

    Book of Standards Volume: 06.01


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    Significance and Use

    4.1 Although Test Method D4017 is widely used for the determination of water in paints and related materials, this method may overcome some of the variability found in the Karl Fischer method.

    4.2 Control of water content is often important in controlling the performance of paints, and it is critical in determining volatile organic compound (VOC) content when VOC content is measured by difference from total volatile matter and water content as required in certain federal and state regulations.

    1. Scope

    1.1 This test method describes the determination of the total water content of paints using a calcium hydride reaction test kit, or water content between 2 and 85 % water.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 This standard does not purport to address all of the safety concerns, 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

    D1193 Specification for Reagent Water

    D3925 Practice for Sampling Liquid Paints and Related Pigmented Coatings

    D4017 Test Method for Water in Paints and Paint Materials by Karl Fischer Method

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications


    ICS Code

    ICS Number Code 87.040 (Paints and varnishes)

    UNSPSC Code

    UNSPSC Code 31211500(Paints and primers)


    DOI: 10.1520/D7358

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