ASTM D1177-05

Standard Test Method for Freezing Point of Aqueous Engine Coolants

SCOPE
1.1 This test method covers the determination of the freezing point of an aqueous engine coolant solution in the laboratory.
Note 1—Where solutions of specific concentrations are to be tested, they shall be prepared from representative samples as directed in Test Methods D 1176. Secondary phases separating on dilution need not be separated.
Note 2—These products may also be marketed in a ready-to-use form (prediluted).
1.2 The values stated in SI units are to be regarded as the 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: 31-May-2005
• ICS: 71.100.45 - Refrigerants and antifreezes
• Technical Committee: D15 - Engine Coolants and Related Fluids
• Drafting Committee: D15.03 - Physical Properties

Relations

• Replaces: ASTM D1177-94(1998)e1 - Standard Test Method for Freezing Point of Aqueous Engine Coolants
• Effective Date: 01-Jun-2005
• Replaced By: ASTM D1177-07 - Standard Test Method for Freezing Point of Aqueous Engine Coolants
• Effective Date: 01-Apr-2007
• Referred By: ASTM D7714-11(2021) - Standard Specification for Glycerin Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jun-2005
• Referred By: ASTM D7583-16(2023) - Standard Test Method for John Deere Coolant Cavitation Test
• Effective Date: 01-Jun-2005
• Referred By: ASTM D8039-16(2023) - Standard Specification for Heat Transfer Fluids (HTF) for Heating and Air Conditioning (HVAC) Systems
• Effective Date: 01-Jun-2005
• Referred By: ASTM D7713-18 - Standard Specification for Aqueous Engine Coolant Grade Glycol (53 % by Volume Nominal)
• Effective Date: 01-Jun-2005
• Referred By: ASTM D6660-01(2023) - Standard Test Method for Freezing Point of Aqueous Ethylene Glycol Base Engine Coolants by Automatic Phase Transition Method
• Effective Date: 01-Jun-2005
• Referred By: ASTM D3585-08(2020) - Standard Specification for ASTM Reference Fluid for Coolant Tests
• Effective Date: 01-Jun-2005
• 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-Jun-2005
• Referred By: ASTM D7518-20 - Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jun-2005
• Referred By: ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jun-2005
• Referred By: ASTM D3321-19(2023) - Standard Test Method for Use of the Refractometer for Field Test Determination of the Freezing Point of Aqueous Engine Coolants
• Effective Date: 01-Jun-2005

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:D1177–05
Standard Test Method for
1
Freezing Point of Aqueous Engine Coolants
This standard is issued under the fixed designation D1177; 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 4. Summary of Test Method
1.1 This test method covers the determination of the freez- 4.1 This test method involves the determination of the
ing point of an aqueous engine coolant solution in the time-temperature curve prior to freezing and the determination
laboratory. of the horizontal or flattened portion of the freezing curve.The
freezing point is taken as the intersection of projections of the
NOTE 1—Where solutions of specific concentrations are to be tested,
cooling curve and the freezing curve. If the solution super-
they shall be prepared from representative samples as directed in Test
cools, the freezing point is the maximum temperature reached
Methods D1176. Secondary phases separating on dilution need not be
after supercooling.
separated.
NOTE 2—These products may also be marketed in a ready-to-use form
5. Significance and Use
(prediluted).
5.1 The freezing point of an engine coolant indicates the
1.2 The values stated in SI units are to be regarded as the
coolant freeze protection.
standard. The values given in parentheses are for information
5.2 The freezing point of an engine coolant may be used to
only.
determine the approximate glycol content, provided the glycol
1.3 This standard does not purport to address all of the
type is known.
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 Freezing Point Apparatus, shown assembled in Fig. 1,
bility of regulatory limitations prior to use.
consisting of the following:
2. Referenced Documents
6.1.1 Cooling Bath, in which the refrigerant is contained,
2
consisting of a standard 1.9-L (2-qt) Dewar flask. The flask
2.1 ASTM Standards:
may be silvered or unsilvered, and is supported in a close-
D1176 Test Method for Sampling and Preparing Aqueous
fitting container.Apad of glass wool is placed in the bottom of
Solutions of Engine Coolants or Antirusts for Testing
the flask to protect it from damage by tip of freezing tube.
Purposes
3
6.1.2 Freezing Tube consisting of a 200-mL (6.8-oz.)
E1 Specification for ASTM Thermometers
unevacuated, unsilvered Dewar flask. The tube is closed by a
3. Terminology
cork having a central hole for the thermocouple or thermom-
eter,asecondholeplacedtoonesideforpassageofthestirring
3.1 Definitions:
rod, and a third hole for introducing wire for seeding at
3.1.1 freezing point—the temperature at which crystalliza-
appropriate time.
tion begins in the absence of supercooling, or the maximum
6.1.3 Stirring Mechanism, consisting of a five-coil stirrer
temperature reached immediately after initial crystal formation
1
formedofstainlesssteelwire1.6mm( ⁄16in.)indiameter.The
in the case of supercooling.
coils are so spaced that, in the extreme upward position during
operation, no coils are exposed above the surface of the
1
This test method is under the jurisdiction ofASTM Committee D15 on Engine
sample. The stirrer is agitated by means of an ordinary
Coolants and is the direct responsibility of Subcommittee D15.03 on Physical
windshield wiper motor or other motor devices, operating
Properties.
Current edition approved June 1, 2005. Published June 2005. Originally
approved in 1941. Last previous edition approved in 1998 as D1177–94(1998).
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or For routine work, a tube with a seeding tip as described in the paper by R. E.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Mallonee and F. L. Howard, “The Determination of Freezing Point of Engine
Standards volume information, refer to the standard’s Document Summary page on Antifreeze,”intheFebruary1951issueofthe ASTM Bulletinmaybeused.(SeeFig.
the ASTM website. 2.)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D1177–05
FIG. 1 Assembly of Freezing Point Apparatus
using suitable reference standards. Platinum resistance ther-
mometers have been adopted as a standard by the National
Institute of Standards and Technology (NIST) and are recom-
mended for this standard.
NOTE 3—ASTM Coolant Freezing Point Temperature Measuring In-
struments havi
...