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Significance and Use
These test methods are suitable for research or as quality control or specification tests.
Viscosity measures the resistance of a fluid to uniformly continuous flow without turbulence or other forces.
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 or at 50°C. Test Method A also applies to more viscous samples that are soluble in n-butyl acetate. Test Method B is simply a reference to a general procedure for kinematic viscosity, D 445
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—There is no equivalent ISO standard for Test Method A although ISO 3219 is similar. Test Method B is equivalent to ISO 3104.
Note 1—There is no equivalent ISO standard for Test Method A although ISO 3219 is similar. 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.
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D883 Terminology Relating to Plastics
E1 Specification for ASTM Liquid-in-Glass Thermometers
ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics); 83.080.20 (Thermoplastic materials)
UNSPSC Code 12352100(Organic derivatives and substituted compounds)
ASTM D4878-08, Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols, ASTM International, West Conshohocken, PA, 2008, www.astm.orgBack to Top