Método de prueba estándar para la viscosidad cinemática de líquidos transparentes y opacos (y cálculo de la viscosidad dinámica)

Designation: D 445 – 06

An American National Standard British Standard 2000: Part 71:1990

Designation: 71/1/97

Standard Test Method for

Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)1
This standard is issued under the fixed designation D 445; the number immediately following the designation indicates the year of original adoption or, inthe case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

1. Scope* 1.1 This test method specifies a procedure for the determination of the kinematic viscosity, n, ofliquid petroleum products, both transparent and opaque, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. The dynamic viscosity, h, can be obtained by multiplying the kinematic viscosity, n, by the density, r, of the liquid.
NOTE 1—For the measurement of the kinematic viscosity and viscosity of bitumens, see also Test Methods D 2170and D 2171. NOTE 2—ISO 3104 corresponds to Test Method D 445.

priate safety and health practices and determine the applicability of regulatory limitations prior to use. 2. Referenced Documents 2.1 ASTM Standards: 2 D 446 Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers D 1193 Specification for Reagent Water D 1217 Test Method for Density and Relative Density(Specific Gravity) of Liquids by Bingham Pycnometer D 1480 Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Bingham Pycnometer D 1481 Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Lipkin Bicapillary Pycnometer D 2162 Practice for Basic Calibration of Master Viscometers and Viscosity Oil Standards D 2170 Test Method forKinematic Viscosity of Asphalts (Bitumens) D 2171 Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer D 6071 Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy D 6074 Guide for Characterizing Hydrocarbon Lubricant Base Oils D 6617 Practice for Laboratory Bias Detection Using Single Test Result from Standard Material E 1 Specificationfor ASTM Liquid-in-Glass Thermometers E 77 Test Method for Inspection and Verification of Thermometers 2.2 ISO Standards:3

1.2 The result obtained from this test method is dependent upon the behavior of the sample and is intended for application to liquids for which primarily the shear stress and shear rates are proportional (Newtonian flow behavior). If, however, the viscosity variessignificantly with the rate of shear, different results may be obtained from viscometers of different capillary diameters. The procedure and precision values for residual fuel oils, which under some conditions exhibit non-Newtonian behavior, have been included. 1.3 The range of kinematic viscosities covered by this test method is from 0.2 to 300 000 mm2/s (see Table A1.1) at all temperatures (see 6.3 and 6.4).The precision has only been determined for those materials, kinematic viscosity ranges and temperatures as shown in the footnotes to the precision section. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It isthe responsibility of the user of this standard to establish appro-

1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.07 on Flow Properties. Current edition approved May 15, 2006. Published June 2006. Originally approved in 1937. Last previous edition approved in 2004 as D 445–04e2. In...