ASTM D7388-23
(Specification)Standard Specification for Engine Coolant Grade 1,3-Propanediol (PDO)
Standard Specification for Engine Coolant Grade 1,3-Propanediol (PDO)
ABSTRACT
This specification covers engine coolant grade 1,3-propanediol (PDO). Engine coolant grade 1,3-propanediol shall conform to the chemical and physical property requirements specified. Density or relative density, color of clear liquids, pH, trace chloride ion, ion chromatography analysis, digital density meter, ethylene glycols and propylene glycols analyses, and inductively couple plasma-atomic emission spectroscopy tests shall be performed.
SCOPE
1.1 This specification covers engine coolant grade 1,3-propanediol (PDO).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
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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: D7388 − 23
Standard Specification for
1
Engine Coolant Grade 1,3-Propanediol (PDO)
This standard is issued under the fixed designation D7388; 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* D1613 Test Method for Acidity in Volatile Solvents and
Chemical Intermediates Used in Paint, Varnish, Lacquer,
1.1 This specification covers engine coolant grade 1,3-
and Related Products
propanediol (PDO).
D3634 Test Method for Trace Chloride Ion in Engine Cool-
1.2 The values stated in SI units are to be regarded as
ants
standard. No other units of measurement are included in this
D4052 Test Method for Density, Relative Density, and API
standard.
Gravity of Liquids by Digital Density Meter
1.3 This standard does not purport to address all of the D5827 Test Method for Analysis of Engine Coolant for
safety concerns, if any, associated with its use. It is the
Chloride and Other Anions by Ion Chromatography
responsibility of the user of this standard to establish appro- D5931 Test Method for Density and Relative Density of
priate safety, health, and environmental practices and deter-
Engine Coolant Concentrates and Aqueous Engine Cool-
mine the applicability of regulatory limitations prior to use. ants by Digital Density Meter
1.4 This international standard was developed in accor-
D6130 Test Method for Determination of Silicon and Other
dance with internationally recognized principles on standard- Elements in Engine Coolant by Inductively Coupled
ization established in the Decision on Principles for the
Plasma-Atomic Emission Spectroscopy
Development of International Standards, Guides and Recom- D7515 Test Method for Purity of 1,3-Propanediol (Gas
mendations issued by the World Trade Organization Technical
Chromatographic Method)
Barriers to Trade (TBT) Committee. E202 Test Methods for Analysis of Ethylene Glycols and
Propylene Glycols
2. Referenced Documents
E300 Practice for Sampling Industrial Chemicals
2
2.1 ASTM Standards:
3. Requirements
D1122 Test Method for Relative Density of Engine Coolant
Concentrates and Engine Coolants By The Hydrometer
3.1 Engine coolant grade 1,3-propanediol shall conform to
D1123 Test Methods for Water in Engine Coolant Concen-
the chemical and physical property requirements in Table 1.
trate by the Karl Fischer Reagent Method
4. Sampling
D1209 Test Method for Color of Clear Liquids (Platinum-
Cobalt Scale)
4.1 Sample 1,3-propanediol in accordance with the appro-
D1287 Test Method for pH of Engine Coolants and Antirusts
priate sections of Practice E300 for liquid samples.
5. Packaging, Package Marking, and Transportation
1
This specification is under the jurisdiction of ASTM Committee D15 on Engine
Coolants and Related Fluids and is the direct responsibility of Subcommittee
5.1 The packaging, labeling, and transportation of commer-
D15.07 on Specifications.
cial quantities shall conform to applicable federal, state, and
Current edition approved March 1, 2023. Published May 2023. Originally
local regulations. Conformance is the responsibility of
...
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: D7388 − 18 D7388 − 23
Standard Specification for
1
Engine Coolant Grade 1,3-Propanediol (PDO)
This standard is issued under the fixed designation D7388; 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 Scope*
1.1 This specification covers engine coolant grade 1,3-propanediol (PDO).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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
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
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
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
D7515 Test Method for Purity of 1,3-Propanediol (Gas Chromatographic Method)
E202 Test Methods for Analysis of Ethylene Glycols and Propylene Glycols
E300 Practice for Sampling Industrial Chemicals
1
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 Nov. 1, 2018March 1, 2023. Published November 2018May 2023. Originally approved in 2007. Last previous edition approved in 20132018
as D7388D7388 – 18.–08 (2013). DOI: 10.1520/D7388–18. DOI: 10.1520/D7388-23.
2
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
1
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D7388 − 23
3. Requirements
3.1 Engine coolant grade 1,3-propanediol shall conform to the chemical and physical property requirements in Table 1.
4. Sampling
4.1 Sample 1,3-propanediol in accordance with the appropriate sections of Practice E300 for liquid samples.
5. Packaging, Package Marking, and Transportation
5.1 The packaging, labeling, and transportation of commercial quantities shall conform to applicable federal, state, and local
regulations. Conformance is the responsibility of the manufacturer and the shipper.
6. Keywords
6.1 engine coolant; glycol; 1,3-propanediol; PDO
SUMMARY OF CHANGES
Subcommittee D15.07 has identified the location of the selected changes to this standard since the last issue
(D7388 – 18) that may impact the use of this standard.
(1) In Table 1, Physical and Chemical Requirements, the Relative density, 20/20 °C, was changed from 1.0520–1.0540 to
1.052–1.054.
TABLE 1 Physical and Chemical Requirements
ASTM Test
Requirement Values for PDO
Method
Requirement Values for PDO ASTM Test
Method
1,3-Propanediol, mass % 99.0 min D7515
Dipropylene glycol, mass % 0.5 m
...
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