ASTM D4672 Determination of Water Content of Polyols

ASTM D4672 Determination of Water Content of Polyols

ASTM D4672 is a procedure to determine the amount of water in polyols and other organic compounds. This standard does not claim to resolve any safety problems related to its application. The values are considered as a standard when expressed in SI units.

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    Scope:

    ASTM D4672 test method is appropriate for quality assurance, specification testing, organic compounds, and research. Because isocyanates react with water, a polyol’s water content is critical. The Efficiency of this test is quite high.

    Procedure:

    For ASTM D4672 test method, an auto titrators operating manual is useful. The sample is inserted after the reagent has been pre neutralized in the titrator vessel, and the volumetric titration (or coulometric generation of titrant) proceeds automatically to the endpoint. Based on the sample weight, standardization factor, and titrant volume ate, the auto titrator calculates and displays the water content automatically.

    Results

    In ASTM D4672 test the absolute difference between two individual test results obtained under repeatability circumstances is estimated to occur with a probability of around 0.95 (95 percent ).

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