ASTM D1122-97a(2002)

Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer

SIGNIFICANCE AND USE
The relative density of an engine coolant may be used to determine the approximate percent glycol, freezing point, and boiling point, provided the glycol type is known.
The relative density of an engine coolant concentrate can be used as a production control test.
SCOPE
1.1 This test method covers the determination of the density or relative density of engine coolant concentrates and engine coolants.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
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.

General Information

• Status: Historical
• Publication Date: 09-Oct-1997
• ICS: 71.100.45 - Refrigerants and antifreezes
• Technical Committee: D15 - Engine Coolants and Related Fluids
• Drafting Committee: D15.03 - Physical Properties

Relations

• Replaces: ASTM D1122-97a - Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
• Effective Date: 10-Oct-1997
• Replaced By: ASTM D1122-08 - Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
• Effective Date: 01-Apr-2008
• Referred By: ASTM D7714-11(2021) - Standard Specification for Glycerin Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Oct-1997
• Referred By: ASTM D7388-23 - Standard Specification for Engine Coolant Grade 1,3-Propanediol (PDO)
• Effective Date: 10-Oct-1997
• Referred By: ASTM D7518-20 - Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Oct-1997
• Referred By: ASTM D7713-18 - Standard Specification for Aqueous Engine Coolant Grade Glycol (53 % by Volume Nominal)
• Effective Date: 10-Oct-1997
• 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-Oct-1997
• Referred By: ASTM D8039-16(2023) - Standard Specification for Heat Transfer Fluids (HTF) for Heating and Air Conditioning (HVAC) Systems
• Effective Date: 10-Oct-1997
• Referred By: ASTM D3585-08(2020) - Standard Specification for ASTM Reference Fluid for Coolant Tests
• Effective Date: 10-Oct-1997
• Referred By: ASTM D8085-17 - Standard Specification for Non-Aqueous Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Oct-1997
• Referred By: ASTM D7640-16(2021) - Standard Specification for Engine Coolant Grade Glycerin
• Effective Date: 10-Oct-1997
• 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-Oct-1997
• Referred By: ASTM E1177-23 - Standard Specification for Engine Coolant Grade Glycol
• Effective Date: 10-Oct-1997
• Referred By: ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Oct-1997
• Referred By: ASTM D4337-89(2017) - Standard Test Methods for Analysis of Linear Detergent Alkylates
• Effective Date: 10-Oct-1997

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:D1122–97a (Reapproved 2002)
Standard Test Method for
Density or Relative Density of Engine Coolant Concentrates
and Engine Coolants By The Hydrometer
This standard is issued under the fixed designation D1122; 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 (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 5. Apparatus
1.1 Thistestmethodcoversthedeterminationoftherelative 5.1 Hydrometers—Hydrometersshallbeofglass,graduated
density of engine coolant concentrates and engine coolants. in specific gravity range as listed inTable 1, and shall conform
1.2 The values stated in SI units are to be regarded as to Specification E100.
standard. The values given in parentheses are for information 5.2 Hydrometer Cylinder—The hydrometer cylinder in
only. which the sample for the relative density test is confined shall
1.3 This standard does not purport to address all of the be made of clear glass and shall be cylindrical in shape. For
safety concerns, if any, associated with its use. It is the convenience in pouring, it may have a lip on the rim. The
responsibility of the user of this standard to establish appro- inside diameter of the cylinder shall be at least 25.4 mm (1.0
priate safety and health practices and determine the applica- in.) greater than the outside diameter of the hydrometer. The
bility of regulatory limitations prior to use. height of the cylinder shall be such that the length of the
columnofsampleitcontainsisgreaterbyatleast25.4mm(1.0
2. Referenced Documents
in.) than the portion of the hydrometer which is immersed
2.1 ASTM Standards: beneath the surface of the sample after a state of equilibrium
D1176 Practice for Sampling and Preparing Aqueous So-
has been reached.
lutions of Engine Coolants or Antirusts for Testing Pur- 5.3 Thermometer—An ASTM Gravity Thermometer 12C,
poses
having a range from−20 to+120°C (or 12F having a range
E1 Specification for ASTM Thermometers from−5 to+215°F) and conforming to Specification E1.
E100 Specification for ASTM Hydrometers 5.4 Water Bath—A water bath capable of maintaining a
sample temperature of 15.5 6 0.3°C (60 6 0.5°F) during the
3. Terminology
test.
3.1 Definition:
6. Sampling
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 6.1 Sample the coolant in accordance with Test Method
same stated temperature.
D1176, except as specified in this test method.
4. Significance and Use 7. Procedure
4.1 Therelativedensityofanenginecoolantmaybeusedto
7.1 If the coolant has a small amount of separated upper
determine the approximate percent glycol, freezing point, and layer, remove it before determining the relative density of the
boiling point, provided the glycol type is known.
lower layer. To separate, pour the sample into a 500-mL
4.2 The relative density of an engine coolant concentrate separatory funnel, allow to stand for3hat room temperature
can be used as a production control test.
but not below 20°C (68°F), and then draw off the lower layer.
7.2 If the original coolant is homogeneous, no separation
will be required.
7.3 Cool the homogeneous sample or the separated lower
This test method is under the jurisdiction ofASTM Committee D15 on Engine
layer sample to about 14°C (57°F). Pour the sample into the
Coolants and is the direct responsibility of Subcommittee D15.03 on Physical
Properties.
clean, dry hydrometer cylinder without splashing, so as to
Current edition approved Oct 10, 1997. Published June 1998. Originally
reducetoaminimumtheformationofairbubbles(seeNote1).
published as D1122–50. Last previous edition D1122–97.
Place the cylinder vertically in the water bath and let the
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