ASTM E1177-23
(Specification)Standard Specification for Engine Coolant Grade Glycol
Standard Specification for Engine Coolant Grade Glycol
ABSTRACT
This specification establishes the testing and requirements of four types of engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols. Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants, and can either be redistilled or virgin. The commercial products shall be suitably sampled and tested, and shall conform accordingly to specified values of the following physical and chemical properties: clarity; color (Pt/Co scale); relative density; pH by volume in distilled water; acidity as acetic acid; composition by mass of individual glycols (including ethylene glycol, propylene glycol, dipropylene glycol, and others); total composition by mass of all glycols; water content; glycol ester content; and the maximum content for nitrites, nitrates, phosphates, silicon, chloride, sulfate, boron, aluminum, calcium, copper, iron, magnesium, lead, zinc, and iron.
SCOPE
1.1 This specification covers commercial products, engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols.
1.2 Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants. These types can be either redistilled or virgin.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
General Information
- Status
- Published
- Publication Date
- 14-May-2023
- Technical Committee
- D15 - Engine Coolants and Related Fluids
- Drafting Committee
- D15.07 - Specifications
Relations
- Effective Date
- 15-May-2020
- Effective Date
- 01-Jan-2020
- Refers
ASTM D7736-19 - Standard Test Method for Determination of Acids and Glycol Esters in Ethylene Glycol - Effective Date
- 01-Apr-2019
- Effective Date
- 01-Mar-2018
- Effective Date
- 01-Mar-2018
- Effective Date
- 01-Nov-2017
- Effective Date
- 01-Apr-2017
- Effective Date
- 01-Apr-2016
- Effective Date
- 01-Oct-2013
- Effective Date
- 01-May-2013
- Effective Date
- 01-May-2013
- Effective Date
- 01-Jun-2012
- Effective Date
- 01-Apr-2012
- Refers
ASTM D7736-12 - Standard Test Method for Determination of Acids and Glycol Esters in Ethylene Glycol - Effective Date
- 01-Apr-2012
- Effective Date
- 01-Nov-2011
Overview
ASTM E1177-23: Standard Specification for Engine Coolant Grade Glycol specifies requirements for ethylene glycol and propylene glycol used in engine coolants. This standard applies to both virgin and recycled glycols, ensuring that products meet precise chemical and physical property requirements. Proper engine coolant grade glycol is critical for thermal efficiency and component protection in automotive and industrial engines.
Key Topics
Product Types:
- EG-1 and PG-1: Glycol with low impurity levels suitable for blending coolants that meet most OEM specifications. Typically produced from virgin materials; high-purity recycled material may also qualify.
- EG-2 and PG-2: Glycol suitable for many coolant applications, available as either virgin or redistilled.
Quality and Purity:
The specification sets limits on clarity, color (Platinum-Cobalt scale), density, pH, acidity, water content, glycols composition, glycol esters, and levels of various trace elements and ions, such as nitrites, nitrates, phosphates, silicon, chloride, and heavy metals.Testing and Compliance:
Products must be sampled and tested using referenced ASTM methods to verify conformity. Only SI units are used as the standard.Sustainability:
The specification encompasses both new (virgin) and recycled glycols, supporting responsible recycling practices within the automotive and industrial sectors.
Applications
Automotive Engine Coolants:
Engine coolant grade glycols specified under ASTM E1177-23 are primarily used in the formulation of antifreeze and coolant blends for internal combustion engines, ensuring optimal freeze protection, boiling protection, and corrosion resistance.Industrial Coolant Formulations:
These glycols are utilized in heat transfer fluids and closed-loop refrigeration systems, supporting efficient thermal management in a variety of equipment.Recycling and Reuse:
The inclusion of recycled glycols enables manufacturers and service providers to source sustainable materials without compromising on cooling performance or safety, supporting circular economy goals.Original Equipment Manufacturer (OEM) Compliance:
By adhering to types EG-1 and PG-1, formulators ensure compatibility with most OEM coolant requirements, which is essential for warranty and performance considerations.
Related Standards
- ASTM D1122 – Test Method for Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
- ASTM D1123 – Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method
- ASTM D1209 – Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
- ASTM D1287 – Test Method for pH of Engine Coolants and Antirusts
- ASTM D1613 – Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
- ASTM D3634 – Test Method for Trace Chloride Ion in Engine Coolants
- ASTM D4725 – Terminology for Engine Coolants and Related Fluids
- ASTM E300 – Practice for Sampling Industrial Chemicals
- ASTM D5931, D5827, D6130, D7736, E202, E394 – Various methods for testing density, anion content, metallic elements, acids, and glycol composition
These related ASTM standards detail the testing and analysis procedures that underpin compliance with ASTM E1177-23, ensuring consistent product performance and quality.
Keywords: engine coolant, glycol, ethylene glycol, propylene glycol, recycled glycol, ASTM E1177-23, anti-freeze, OEM coolant, engine coolant specification, ASTM standard, coolant quality, sustainable coolant.
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Frequently Asked Questions
ASTM E1177-23 is a technical specification published by ASTM International. Its full title is "Standard Specification for Engine Coolant Grade Glycol". This standard covers: ABSTRACT This specification establishes the testing and requirements of four types of engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols. Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants, and can either be redistilled or virgin. The commercial products shall be suitably sampled and tested, and shall conform accordingly to specified values of the following physical and chemical properties: clarity; color (Pt/Co scale); relative density; pH by volume in distilled water; acidity as acetic acid; composition by mass of individual glycols (including ethylene glycol, propylene glycol, dipropylene glycol, and others); total composition by mass of all glycols; water content; glycol ester content; and the maximum content for nitrites, nitrates, phosphates, silicon, chloride, sulfate, boron, aluminum, calcium, copper, iron, magnesium, lead, zinc, and iron. SCOPE 1.1 This specification covers commercial products, engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols. 1.2 Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants. These types can be either redistilled or virgin. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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.
ABSTRACT This specification establishes the testing and requirements of four types of engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols. Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants, and can either be redistilled or virgin. The commercial products shall be suitably sampled and tested, and shall conform accordingly to specified values of the following physical and chemical properties: clarity; color (Pt/Co scale); relative density; pH by volume in distilled water; acidity as acetic acid; composition by mass of individual glycols (including ethylene glycol, propylene glycol, dipropylene glycol, and others); total composition by mass of all glycols; water content; glycol ester content; and the maximum content for nitrites, nitrates, phosphates, silicon, chloride, sulfate, boron, aluminum, calcium, copper, iron, magnesium, lead, zinc, and iron. SCOPE 1.1 This specification covers commercial products, engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols. 1.2 Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants. These types can be either redistilled or virgin. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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.
ASTM E1177-23 is classified under the following ICS (International Classification for Standards) categories: 71.080.60 - Alcohols. Ethers; 71.100.45 - Refrigerants and antifreezes. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM E1177-23 has the following relationships with other standards: It is inter standard links to ASTM D5931-20, ASTM D1287-11(2020), ASTM D7736-19, ASTM D6130-11(2018), ASTM D7736-12(2018), ASTM D5931-13(2017), ASTM D1122-16(2017)e1, ASTM D1122-16, ASTM D4725-13, ASTM D1122-13, ASTM D5931-13, ASTM D1613-06(2012), ASTM E202-12, ASTM D7736-12, ASTM D6130-11. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM E1177-23 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.
Designation: E1177 − 23
Standard Specification for
Engine Coolant Grade Glycol
This standard is issued under the fixed designation E1177; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D1123 Test Methods for Water in Engine Coolant Concen-
trate by the Karl Fischer Reagent Method
1.1 This specification covers commercial products, engine
D1209 Test Method for Color of Clear Liquids (Platinum-
coolant grade ethylene glycol and propylene glycol, including
Cobalt Scale)
virgin glycols and those derived from the recycling of vehicle
D1287 Test Method for pH of Engine Coolants and Antirusts
engine coolants and industrial source glycols.
D1613 Test Method for Acidity in Volatile Solvents and
1.2 Types EG-1 and PG-1 cover glycols with sufficiently
Chemical Intermediates Used in Paint, Varnish, Lacquer,
low limits on components to allow a blended coolant to meet
and Related Products
most OEM (Original Equipment Manufacturer) specifications.
D3634 Test Method for Trace Chloride Ion in Engine Cool-
These types will probably be virgin materials, although redis-
ants
tillation could produce a sufficiently pure product. Types EG-2
D4725 Terminology for Engine Coolants and Related Fluids
and PG-2 cover glycol that will be suitable for many coolants.
D5827 Test Method for Analysis of Engine Coolant for
These types can be either redistilled or virgin.
Chloride and Other Anions by Ion Chromatography
D5931 Test Method for Density and Relative Density of
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this Engine Coolant Concentrates and Aqueous Engine Cool-
ants by Digital Density Meter
standard.
D6130 Test Method for Determination of Silicon and Other
1.4 This standard does not purport to address all of the
Elements in Engine Coolant by Inductively Coupled
safety concerns, if any, associated with its use. It is the
Plasma-Atomic Emission Spectroscopy
responsibility of the user of this standard to establish appro-
D7736 Test Method for Determination of Acids and Glycol
priate safety, health, and environmental practices and deter-
Esters in Glycols
mine the applicability of regulatory limitations prior to use.
E202 Test Methods for Analysis of Ethylene Glycols and
1.5 This international standard was developed in accor-
Propylene Glycols
dance with internationally recognized principles on standard-
E300 Practice for Sampling Industrial Chemicals
ization established in the Decision on Principles for the
E394 Test Method for Iron in Trace Quantities Using the
Development of International Standards, Guides and Recom-
1,10-Phenanthroline Method
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3. Requirements
2. Referenced Documents
3.1 Engine coolant grade ethylene glycol or propylene
glycol, including virgin glycols and those derived from the
2.1 ASTM Standards:
recycling of vehicle engine coolants and industrial source
D1122 Test Method for Relative Density of Engine Coolant
glycols, shall conform to the chemical and physical property
Concentrates and Engine Coolants By The Hydrometer
requirements in Table 1.
This specification is under the jurisdiction of ASTM Committee D15 on Engine
4. Sampling
Coolants and Related Fluids and is the direct responsibility of Subcommittee
D15.07 on Specifications.
4.1 Sample ethylene or propylene glycol in accordance with
Current edition approved May 15, 2023. Published May 2023. Originally
the appropriate sections of Practice E300 for liquid samples.
approved in 1987. Last previous edition approved in 2022 as E1177 – 22. DOI:
10.1520/E1177-23.
5. Test Methods
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 Test each composite sample for the chemical and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. physical requirements listed in 3.1.
*A Summary of Cha
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1177 − 22 E1177 − 23
Standard Specification for
Engine Coolant Grade Glycol
This standard is issued under the fixed designation E1177; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers commercial products, engine coolant grade ethylene glycol and propylene glycol, including virgin
glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols.
1.2 Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM
(Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could
produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants. These types can
be either redistilled or virgin.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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
2.1 ASTM Standards:
D1122 Test Method for 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
D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
D1287 Test Method for pH of Engine Coolants and Antirusts
D1613 Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related
Products
D3634 Test Method for Trace Chloride Ion in Engine Coolants
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
This specification is under the jurisdiction of ASTM Committee D15 on Engine Coolants and Related Fluids and is the direct responsibility of Subcommittee D15.07
on Specifications.
Current edition approved June 1, 2022May 15, 2023. Published June 2022May 2023. Originally approved in 1987. Last previous edition approved in 20202022 as
E1177E1177 – 22.–20. DOI: 10.1520/E1177-22.10.1520/E1177-23.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E1177 − 23
D6130 Test Method for Determination of Silicon and Other Elements in Engine Coolant by Inductively Coupled Plasma-Atomic
Emission Spectroscopy
D7736 Test Method for Determination of Acids and Glycol Esters in Glycols
E202 Test Methods for Analysis of Ethylene Glycols and Propylene Glycols
E300 Practice for Sampling Industrial Chemicals
E394 Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method
3. Requirements
3.1 Engine coolant grade ethylene glycol or propylene glycol, including virgin glycols and those derived from the recycling of
vehicle engine coolants and industrial source glycols, shall conform to the chemical and physical property requiremen
...
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