ASTM D5931-96(2007)

Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter

SIGNIFICANCE AND USE
Density is a fundamental physical property that can be used in conjunction with other properties to characterize engine coolant concentrates and aqueous engine coolants.
Determination of the density or relative density of these products is necessary for the conversion of measured volumes to volumes at the standard temperature of 20°C (68°F).
SCOPE
1.1 This test method covers the determination of the density or relative density of engine coolant concentrates and aqueous engine coolants.
1.2 This test method should not be applied to samples so dark in color that the absence of air bubbles in the sample cell cannot be established with certainty.
1.3 The accepted units of measure for density are grams per milliliter or kilograms per cubic meter.
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. For specific hazard statements, see Note 0.

General Information

• Status: Historical
• Publication Date: 30-Sep-2007
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• ICS: 47.020.20 - Marine engines and propulsion systems
• ICS: 71.100.45 - Refrigerants and antifreezes
• Technical Committee: D15 - Engine Coolants and Related Fluids
• Drafting Committee: D15.03 - Physical Properties

Relations

• Replaces: ASTM D5931-96(2002) - Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter
• Effective Date: 01-Oct-2007
• Replaced By: ASTM D5931-13 - Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter
• Effective Date: 01-May-2013
• Referred By: ASTM D3585-08(2020) - Standard Specification for ASTM Reference Fluid for Coolant Tests
• Effective Date: 01-Oct-2007
• Referred By: ASTM D7713-18 - Standard Specification for Aqueous Engine Coolant Grade Glycol (53 % by Volume Nominal)
• Effective Date: 01-Oct-2007
• Referred By: ASTM D1176-14(2019) - Standard Practice for Sampling and Preparing Aqueous Solutions of Engine Coolants or Antirusts for Testing Purposes
• Effective Date: 01-Oct-2007
• Referred By: ASTM D7518-20 - Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Oct-2007
• Referred By: ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Oct-2007
• Referred By: ASTM E1177-23 - Standard Specification for Engine Coolant Grade Glycol
• Effective Date: 01-Oct-2007
• Referred By: ASTM D8039-16(2023) - Standard Specification for Heat Transfer Fluids (HTF) for Heating and Air Conditioning (HVAC) Systems
• Effective Date: 01-Oct-2007
• Referred By: ASTM D4985-10(2023) - Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)
• Effective Date: 01-Oct-2007
• Referred By: ASTM D7388-23 - Standard Specification for Engine Coolant Grade 1,3-Propanediol (PDO)
• Effective Date: 01-Oct-2007
• Referred By: ASTM D7896-19 - Standard Test Method for Thermal Conductivity, Thermal Diffusivity, and Volumetric Heat Capacity of Engine Coolants and Related Fluids by Transient Hot Wire Liquid Thermal Conductivity Method
• Effective Date: 01-Oct-2007
• Referred By: ASTM D8085-17 - Standard Specification for Non-Aqueous Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Oct-2007
• Referred By: ASTM D7714-11(2021) - Standard Specification for Glycerin Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Oct-2007
• Referred By: ASTM D7640-16(2021) - Standard Specification for Engine Coolant Grade Glycerin
• Effective Date: 01-Oct-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5931 − 96(Reapproved 2007)
Standard Test Method for
Density and Relative Density of Engine Coolant
Concentrates and Aqueous Engine Coolants by Digital
1
Density Meter
This standard is issued under the fixed designation D5931; 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 caused by the change in the mass of the tube is used in
conjunction with calibration data to determine the density of
1.1 Thistestmethodcoversthedeterminationofthedensity
the sample.
or relative density of engine coolant concentrates and aqueous
engine coolants.
5. Significance and Use
1.2 This test method should not be applied to samples so
5.1 Density is a fundamental physical property that can be
dark in color that the absence of air bubbles in the sample cell
usedinconjunctionwithotherpropertiestocharacterizeengine
cannot be established with certainty.
coolant concentrates and aqueous engine coolants.
1.3 The accepted units of measure for density are grams per
5.2 Determination of the density or relative density of these
milliliter or kilograms per cubic meter.
products is necessary for the conversion of measured volumes
1.4 This standard does not purport to address all of the
to volumes at the standard temperature of 20°C (68°F).
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
6. Apparatus
priate safety and health practices and determine the applica-
6.1 Digital Density Analyzer, consisting of a U-shaped,
bility of regulatory limitations prior to use. For specific hazard
oscillating sample tube and a system for electronic excitation,
statements, see Note 1.
frequency counting, and display.The analyzer must accommo-
2. Referenced Documents date the accurate measurement of the sample temperature
duringmeasurementormustcontrolthesampletemperatureas
2
2.1 ASTM Standards:
described in 6.2. The instrument must meet the precision
D1193Specification for Reagent Water
requirements described in this test method.
D4052Test Method for Density, Relative Density, and API
Gravity of Liquids by Digital Density Meter 6.2 Circulating Constant—Temperature Bath, (optional) ca-
pable of maintaining the temperature of the circulating liquid
3. Terminology
constant to 60.05°C in the desired range. Temperature control
can be maintained as part of the density analyzer instrument
3.1 Definitions:
package.
3.1.1 relative density, n—the ratio of the density of a
material at a stated temperature to the density of water at the
6.3 Syringes, at least 2 mL in volume with a tip or an
same stated temperature.
adapter tip that will fit the opening of the oscillating tube.
4. Summary of Test Method 6.4 Flow-Through or Pressure Adapter, for use as an alter-
native means of introducing the sample into the density
4.1 A small volume of liquid sample is introduced into an
analyzer either by a pump or by vacuum.
oscillatingsampletube,andthechangeinoscillatingfrequency
6.5 Thermometer, calibrated and graduated to 0.1°C, with a
1 thermometer holder that can be attached to the instrument for
This test method is under the jurisdiction ofASTM Committee D15 on Engine
Coolants and Related Fluids and is the direct responsibility of Subcommittee setting and observing the test temperature. In calibrating the
D15.03 on Physical Properties.
thermometer, the freeze point should be estimated to the
Current edition approved Oct. 1, 2007. Published October 2007. Originally
nearest 0.05°C.
approvedin1996.Lastpreviouseditionapprovedin2002asD5931–96(2002)DOI:
10.1520/D5931-96R07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Reagents and Materials
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.1 Purity of Reagents—Use reagent grade chemicals in all
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tests. Unless otherwise indicated, all reagents shall conform to
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1

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D5931 − 96 (2007)
the specifications of the Committee onAnalytical Reagents of does not have to be completely full as long as the liquid
theAmerican Chemical Society, where such specifications are meniscus is beyond the suspension point.Allow the display to
3
available. Other grades may be used, provided it is first reach a steady reading and record the T-value for water.
ascertained that the reagent is of sufficiently high purity to 9.2.4 Record the density of
...