ASTM D5931-96(2002)

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

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 millilitre or kilograms per cubic metre.  
1.4  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 1.

General Information

• Status: Historical
• Publication Date: 09-Apr-1996
• 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 - Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter
• Effective Date: 10-Apr-1996
• Replaced By: ASTM D5931-96(2007) - 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
• Referred By: ASTM D1176-14(2019) - Standard Practice for Sampling and Preparing Aqueous Solutions of Engine Coolants or Antirusts for Testing Purposes
• Effective Date: 10-Apr-1996
• Referred By: ASTM D3585-08(2020) - Standard Specification for ASTM Reference Fluid for Coolant Tests
• Effective Date: 10-Apr-1996
• 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: 10-Apr-1996
• Referred By: ASTM D7518-20 - Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Apr-1996
• Referred By: ASTM D7640-16(2021) - Standard Specification for Engine Coolant Grade Glycerin
• Effective Date: 10-Apr-1996
• 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: 10-Apr-1996
• Referred By: ASTM D7388-23 - Standard Specification for Engine Coolant Grade 1,3-Propanediol (PDO)
• Effective Date: 10-Apr-1996
• Referred By: ASTM D7713-18 - Standard Specification for Aqueous Engine Coolant Grade Glycol (53 % by Volume Nominal)
• Effective Date: 10-Apr-1996
• Referred By: ASTM D7714-11(2021) - Standard Specification for Glycerin Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Apr-1996
• Referred By: ASTM D8039-16(2023) - Standard Specification for Heat Transfer Fluids (HTF) for Heating and Air Conditioning (HVAC) Systems
• Effective Date: 10-Apr-1996
• Referred By: ASTM D8085-17 - Standard Specification for Non-Aqueous Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Apr-1996
• Referred By: ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Apr-1996
• Referred By: ASTM E1177-23 - Standard Specification for Engine Coolant Grade Glycol
• Effective Date: 10-Apr-1996

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 2002)
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 D 5931; the number immediately following the designation indicates the year of
original adoption or, in the 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.
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 This test method covers the determination of the density
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
during measurement or must control the sample temperature as
2.1 ASTM Standards:
2 described in 6.2. The instrument must meet the precision
D 1193 Specification for Reagent Water
requirements described in this test method.
D 4052 Test Method for Density and Relative Density of
3 6.2 Circulating Constant—Temperature Bath, (optional) ca-
Liquids by Digital Density Meter
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
6.3 Syringes, at least 2 mL in volume with a tip or an
material at a stated temperature to the density of water at the
adapter tip that will fit the opening of the oscillating tube.
same stated temperature.
6.4 Flow-Through or Pressure Adapter, for use as an
4. Summary of Test Method alternative means of introducing the sample into the density
analyzer either by a pump or by vacuum.
4.1 A small volume of liquid sample is introduced into an
6.5 Thermometer, calibrated and graduated to 0.1°C, with a
oscillatingsampletube,andthechangeinoscillatingfrequency
thermometer holder that can be attached to the instrument for
setting and observing the test temperature. In calibrating the
1
This test method is under the jurisdiction ofASTM Committee D15 on Engine
thermometer, the freeze point should be estimated to the
Coolants and is the direct responsibility of Subcommittee D15.03 on Physical
nearest 0.05°C.
Properties.
Current edition approved April 10, 1996. Published June 1996.
2
Annual Book of ASTM Standards, Vol 11.01.
3
Annual Book of ASTM Standards, Vol 05.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5931
7. Reagents and Materials suitable syringe. The test portion must be homogeneous and
free of even the smallest air or gas bubbles. The sample tube
7.1 Purity of Reagents—Use reagent grade chemicals in all
does not have to be completely full as long as the liquid
tests. Unless otherwise indicated, all reagents shall conform to
meniscus is beyond the suspension point. Allow the display to
the specifications of the Committee on Analytical Reagents of
reach a steady reading and record the T-value for water.
the American Chemical Society, where such specifications are
4
9.2.4 Record the density of air at the temperature and
available. Other grades may be used, provided it is first
atmospheric pressure of the test. Calculate the density of air at
ascertained that the reagent is of sufficiently high purity to
the temperature of test using the following equation:
permit its
...