ASTM D4878-15 PDF

Scope: 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.

1.1 These test methods (A and B) determine the viscosity of polyols in the range from 10 to 1008201;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.

ASTM D4878-15 Referenced Document

ASTM D445 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)
ASTM D446 Standard Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers
ASTM D883 Standard Terminology Relating to Plastics
ASTM E2251 Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
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 or as emulsions or dispersions; determination of viscosity using a rotational viscometer with defined shear rate

2023 ASTM D4878-23 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
2015 ASTM D4878-15 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
2008 ASTM D4878-08 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
2003 ASTM D4878-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Polyols
1998 ASTM D4878-98 Standard Test Methods for Polyurethane Raw Materials Determination of Viscosity of Polyols