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    ASTM D8039 - 16

    Standard Specification for Heat Transfer Fluids (HTF) for Heating and Air Conditioning (HVAC) Systems

    Active Standard ASTM D8039 | Developed by Subcommittee: D15.30

    Book of Standards Volume: 15.05

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    1. Scope

    1.1 This specification covers the requirements for ethylene glycol, propylene glycol, 1,3 propanediol as well as glycerin base heat transfer fluids (HTF) used in heating and air conditioning (HVAC) systems. When concentrates are used at up to 65 % concentration by weight in water, or when prediluted heat transfer fluids (30 % by weight minimum) are used without further dilution, they will function effectively to provide protection against freezing, and corrosion.

    1.2 The fluids described in this specification are not appropriate for use in systems where internal combustion engines (gasoline, diesel, or CNG/LPG) are used.

    1.3 The heat transfer fluids governed by this specification are categorized as follows by the primary base of freeze depressant used:

    Heat Transfer
    Fluid Type




    Ethylene glycol



    Propylene glycol







    1.4 Heat transfer fluids meeting this specification shall be tested and fully comply with requirements listed in Table 1.

    (A) For purposes of determining conformance with this specification, an observed value shall be rounded “to the nearest unit” in the last right-hand digit used in expressing the specification limit, in accordance with the rounding method of Practice E29.
    (B) Value as agreed upon between the supplier and the customer.
    (C) In case of dispute, Test Method D1122 is the preferred test method.
    (D) Test Methods D1177 and D6660 work with glycol/glycerin mixtures.
    (E) In case of dispute, Test Method D1177 is the preferred test method.

    Note 1: This specification is based on the knowledge of the performance of heat transfer fluids prepared from new or virgin ingredients. This specification shall also apply to heat transfer fluids prepared using materials generated from recycled or reprocessed ingredients, provided that these ingredients meet the requirements of Specifications E1177 and D7388 for Glycols and Specification D7640 for Glycerin.

    Note 2: This specification addresses concentrated inhibited glycols and glycerol that will be mixed with water for use in various climates and prediluted heat transfer fluids (HTF) that are factory-blended with purified water. A table of estimated freeze protection temperatures at appropriate dilutions is provided in Appendix X1.

    1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

    1.6 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.

    1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D512 Test Methods for Chloride Ion In Water

    D516 Test Method for Sulfate Ion in Water

    D1121 Test Method for Reserve Alkalinity of Engine Coolants and Antirusts

    D1122 Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer

    D1123 Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method

    D1126 Test Method for Hardness in Water

    D1177 Test Method for Freezing Point of Aqueous Engine Coolants

    D1287 Test Method for pH of Engine Coolants and Antirusts

    D1293 Test Methods for pH of Water

    D1881 Test Method for Foaming Tendencies of Engine Coolants in Glassware

    D4327 Test Method for Anions in Water by Suppressed Ion Chromatography

    D4725 Terminology for Engine Coolants and Related Fluids

    D5827 Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography

    D5931 Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter

    D6130 Test Method for Determination of Silicon and Other Elements in Engine Coolant by Inductively Coupled Plasma-Atomic Emission Spectroscopy

    D6660 Test Method for Freezing Point of Aqueous Ethylene Glycol Base Engine Coolants by Automatic Phase Transition Method

    D7388 Specification for Engine Coolant Grade 1,3-Propanediol (PDO)

    D7640 Specification for Engine Coolant Grade Glycerin


    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E394 Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method

    E1177 Specification for Engine Coolant Grade Glycol

    ICS Code

    ICS Number Code 71.100.45 (Refrigerants and antifreezes); 91.140.10 (Central heating systems); 91.140.30 (Ventilation and air-conditioning systems)

    UNSPSC Code

    UNSPSC Code 15121530(Heat transfer oil or fluid)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D8039-16

    Citation Format

    ASTM D8039-16, Standard Specification for Heat Transfer Fluids (HTF) for Heating and Air Conditioning (HVAC) Systems, ASTM International, West Conshohocken, PA, 2016, www.astm.org

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