ASTM D4486-18

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4486 − 18
Standard Test Method for
1
Kinematic Viscosity of Volatile and Reactive Liquids
This standard is issued under the fixed designation D4486; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
1.1 This test method covers the measurement of kinematic
Barriers to Trade (TBT) Committee.
viscosity of transparent, Newtonian liquids which because of
their reactivity, instability, or volatility cannot be used in
2. Referenced Documents
conventionalcapillarykinematicviscometers.Thistestmethod
2
−5 2
2.1 ASTM Standards:
is applicable up to 2×10 N/m (2atm) pressure and tem-
D445Test Method for Kinematic Viscosity of Transparent
perature range from −53°C to +135°C (−65°F to +275°F).
and Opaque Liquids (and Calculation of DynamicViscos-
1.1.1 For the measurement of the kinematic viscosity of
ity)
other liquids, see Test Method D445. The difference between
D446Specifications and Operating Instructions for Glass
the two methods is in the viscometers. The viscometers
Capillary Kinematic Viscometers
specified in used Specification D446 are open to the
D2162Practice for Basic Calibration of MasterViscometers
atmosphere, while the viscometers in this method are sealed.
and Viscosity Oil Standards
When volatile liquids are measured in sealed viscometers, the
E1Specification for ASTM Liquid-in-Glass Thermometers
density of the vapor may not be negligible compared with the
SI 10 IEEE/ASTMStandard for Use of the International
density of the liquid and the working equation of the viscom-
System of Units (SI): The Modern Metric System
eter has to account for that. See Section 11 for details.
1.2 WARNING—Mercury has been designated by many
3. Terminology
regulatory agencies as a hazardous substance that can cause
3.1 Definitions of Terms Specific to This Standard:
serious medical issues. Mercury, or its vapor, has been dem-
3.1.1 density—the mass per unit volume of a substance at a
onstrated to be hazardous to health and corrosive to materials.
given temperature and pressure.
Use Caution when handling mercury and mercury-containing
3.1.1.1 Discussion—The cgs unit of density (ρ) has the
products. See the applicable product Safety Data Sheet (SDS)
dimensions of grams per cubic centimetre. The SI unit of
for additional information. The potential exists that selling
density has the dimensions of kilograms per cubic metre.
mercury or mercury-containing products, or both, is prohibited
bylocalornationallaw.Usersmustdeterminelegalityofsales 3.1.2 dynamic viscosity, η,n—the ratio between the applied
shear stress and rate of shear of a material.
in their location.
1.3 This standard does not purport to address all of the
3.1.2.1 Discussion——It is sometimes called the coefficient
safety concerns, if any, associated with its use. It is the
of dynamic viscosity or absolute viscosity. Dynamic viscosity
responsibility of the user of this standard to establish appro-
is a measure of resistance to flow or deformation which
priate safety, health, and environmental practices and deter-
constitutes a material’s ability to transfer momentum in re-
mine the applicability of regulatory limitations prior to use.
sponse to steady or time-dependent external shear forces.
For specific warning statements, see 7.2, 7.3, 7.4, and Annex
Dynamic viscosity has the dimension of mass divided by
A1.
length and time and its SI unit is pascal times second (Pa·s).
1.4 This international standard was developed in accor-
Among the transport properties for heat, mass, and momentum
dance with internationally recognized principles on standard-
transfer, dynamic viscosity is the momentum conductivity.
ization established in the Decision on Principles for the
3.1.3 kinematic viscosity, ν,n—the ratio of the dynamic
viscosity (η) to the density (ρ) of a material at the same
temperature and pressure.
1
This test method is under the jurisdiction of Committee D02 on Petroleum
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom-
mittee D02.L0.07 on Engineering Sciences of High Performance Fluids and Solids
2
(Formally D02.1100). For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2018. Published February 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in
...