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    ASTM D4878 - 15

    Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols

    Active Standard ASTM D4878 | Developed by Subcommittee: D20.22

    Book of Standards Volume: 08.02

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    Significance and Use

    4.1 These test methods are suitable for research or as quality control or specification tests.

    4.2 Viscosity measures the resistance of a fluid to uniformly continuous flow without turbulence or other forces.

    1. Scope

    1.1 These test methods (A and B) determine the viscosity of polyols in the range from 10 to 100 000 mPa·s(cP) at 25°C. Test Method A is a rotational procedure for determining dynamic viscosity. Test Method B is a general procedure for kinematic viscosity of transparent polyols. (See Note 1.)

    1.2 The values stated in SI units are to be regarded as the standard. Other equivalent units are provided because of current common usage.

    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.

    Note 1: Test Method A is equivalent to ISO 3219. Test Method B is equivalent to ISO 3104.

    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

    D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

    D446 Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers

    D883 Terminology Relating to Plastics

    E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

    ISO Standards

    ISO 3104 Petroleum Products--Transparent and Opaque Liquids--Determination of Kinematic Viscosity and Calculation of Dynamic Viscosity

    ISO 3219 Plastics--Polymers/Resins in the Liquid State of as Emulsions or Dispersions--Determination of Viscosity Using a Rotational Viscometer with Defined Shear Rate

    ICS Code

    ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics); 83.080.20 (Thermoplastic materials)

    UNSPSC Code

    UNSPSC Code 12352100(Organic derivatives and substituted compounds)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D4878-15

    Citation Format

    ASTM D4878-15, Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols, ASTM International, West Conshohocken, PA, 2015, www.astm.org

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