ASTM D1120-94(1998)

Standard Test Method for Boiling Point of Engine Coolants

SCOPE
1.1 This test method covers the determination of the equilibrium boiling point of engine coolants. The equilibrium boiling point indicates the temperature at which the sample will start to boil in a cooling system under equilibrium conditions at atmospheric pressure.  Note 1-Engine coolants may also be marketed in a ready-to-use form (prediluted). This test procedure is applicable to diluted solutions as well as to concentrates. Note 2-The procedure for obtaining a representative test sample of a coolant solution that contains an antileak additive, is found in Test Method D1176.
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: 31-Dec-1997
• Technical Committee: D15 - Engine Coolants and Related Fluids
• Drafting Committee: D15.03 - Physical Properties

Relations

• Replaced By: ASTM D1120-94(1998)e1 - Standard Test Method for Boiling Point of Engine Coolants
• Effective Date: 15-Jul-1994
• Referred By: ASTM D7518-20 - Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jan-1998
• Referred By: ASTM D3585-08(2020) - Standard Specification for ASTM Reference Fluid for Coolant Tests
• Effective Date: 01-Jan-1998
• Referred By: ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jan-1998
• Referred By: ASTM D8085-17 - Standard Specification for Non-Aqueous Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jan-1998
• 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-Jan-1998
• Referred By: ASTM D7714-11(2021) - Standard Specification for Glycerin Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 01-Jan-1998

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 1120 – 94 (Reapproved 1998)
Standard Test Method for
Boiling Point of Engine Coolants
This standard is issued under the fixed designation D1120; 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. Apparatus (Fig. 1)
1.1 This test method covers the determination of the equi- 4.1 Flask—A 100-mL round-bottom, short-neck, heat-
librium boiling point of engine coolants. The equilibrium resistant glass flask having a neck with a ⁄38 standard-taper,
boilingpointindicatesthetemperatureatwhichthesamplewill female ground-glass joint and a 10-mm (0.4-in) outside diam-
starttoboilinacoolingsystemunderequilibriumconditionsat eter side-entering tube, so located as to permit the end of the
atmospheric pressure. thermometer bulb to be directly centered in the flask 6.5 mm
(0.26 in.) from the bottom. The flask is shown in Fig. 2.
NOTE 1—Enginecoolantsmayalsobemarketedinaready-to-useform
4.2 Condenser—The condenser shall be of the water-
(prediluted). This test procedure is applicable to diluted solutions as well
cooled, reflux, glass-tube type, having a condenser jacket 200
as to concentrates.
mm (7.9 in.) in length. The bottom end of the condenser shall
NOTE 2—The procedure for obtaining a representative test sample of a
coolantsolutionthatcontainsanantileakadditiveisfoundinTestMethod
have a ⁄38 standard-taper, drip-tip, male ground-glass joint.
D1176.
4.3 Boiling Stones— Three or four silicon carbide grains,
grit No. 8 or other suitable inert chips, shall be used for each
1.2 The values stated in SI units are to be regarded as
determination.
standard. The values given in parentheses are for information
4.4 Thermometer— An ASTM Partial Immersion Ther-
only.
mometer, having a range from−5 to+300°C (20 to 580°F)
1.3 This standard does not purport to address all of the
andconformingtotherequirementsforThermometer2Cor2F,
safety concerns, if any, associated with its use. It is the
as prescribed in Specification E1.
responsibility of the user of this standard to establish appro-
4.5 Heat Source— A suitable electric heating mantle shall
priate safety and health practices and determine the applica-
be used, such that sufficient heat can be obtained to comply
bility of regulatory limitations prior to use.
with the heating and refluxing rates specified in Section 7.
2. Referenced Documents
5. Sample
2.1 ASTM Standards:
5.1 To obtain a sample of unused concentrated coolant for
D1176 Test Method for Sampling and Preparing Aqueous
boiling point determination, the following procedure is sug-
Solutions of Engine Coolants or Antirusts for Testing
gested:
Purposes
5.1.1 Allow material as received in the original container to
E1 Specification for ASTM Thermometers
come to room temperature (20°C (68° F) but not below 20°C
3. Summary of Test Method
minimum).
5.1.2 Shakethecontainertomixanymaterialthatmayhave
3.1 Sixty millilitres (two ounces) of the sample are boiled
under equilibrium conditions at atmospheric pressure in a separated.
5.1.3 Immediately remove desired sample for test require-
100-mL flask. The temperature of the liquid corrected for
barometric pressure is the boiling point. ment.
5.2 To prepare a dilute solution of any mixture, thoroughly
mix the sample, pipet the required volume into a calibrated
ThistestmethodisunderthejurisdictionofASTMCommitteeD-15onEngine
Coolants and is the direct responsibility of Subcommittee D15.03 on Physical
Properties. The short-neckflask shown in Fig. 2 can be purchased from S.G. & P. Inc., PO
Current edition approved July 15, 1994. Published September 1994. Originally Box 2518, Freeport, TX 77541, Tel: [phone], or Ace Glass Inc., 1430
published as D1120–50T. Last previous edition D1120–93. Northwest Blvd., Vineland, NJ 08360, Tel: [phone].
2 5
Annual Book of ASTM Standards, Vol 15.05. Silicon carbide grains, grit No. 8, may be obtained from Electro Minerals Co.
Annual Book of ASTM Standards, Vol 14.03. (US) Inc. P.O. Box 423 Niagara Falls, NY 14302. Product No: 1242-0008-3-8RA.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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.
D 1120
glassware by a laboratory-type ring support and stand. The
whole assembly is held in place by a clamp. Connect the
cooling water inlet and outlet tubes to the condenser.
7. Procedure
7.1 When assembled as shown in Fig. 1, turn on the
condenser water and apply heat by means of an elec
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