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ASTM D6471-05

(Specification)

Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service

Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service

SCOPE
1.1 This specification covers the requirements for a recycled prediluted aqueous ethylene glycol (50 volume % minimum) base engine coolant and recycled prediluted aqueous propylene glycol (50 volume % minimum) base engine coolant for use in automobiles and light-duty vehicles. Committee D15 has developed this specification using experience, knowledge and research from recycling used aqueous base engine coolant and blends of used aqueous base engine coolant and virgin glycol. This standard does not apply to coolant produced from other glycol sources such as medical waste, distillation bottoms, airplane/airport deicers and polyester production waste. This specification provides a procedure for evaluating engine coolant recycling technologies through the recycling of a reference synthetic used engine coolant. It also specifies the chemical, physical, and performance requirements for the recycled prediluted aqueous glycol base engine coolant that is produced from that procedure. When used without further dilution, this product functions effectively during both winter and summer. This material is intended to provide protection against freezing, boiling, and corrosion in automobile or other light-duty service cooling systems.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are approximate equivalents and provided 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
30-Jun-2005
ICS
71.100.45 - Refrigerants and antifreezes
Technical Committee
D15 - Engine Coolants and Related Fluids
Drafting Committee
D15.15 - Recycled Engine Coolant
Current Stage
Ref Project

Relations

Replaces
ASTM D6471-03 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
Effective Date
01-Jul-2005
Replaced By
ASTM D6471-06 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
Effective Date
01-Jun-2006
Referred By
ASTM D4725-15(2023) - Standard Terminology for Engine Coolants and Related Fluids
Effective Date
01-Jul-2005
Referred By
ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
Effective Date
01-Jul-2005
Referred By
ASTM D5752-10(2017) - Standard Specification for Supplemental Coolant Additives (SCAs) for Use in Precharging Coolants for Heavy-Duty Engines
Effective Date
01-Jul-2005

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ASTM D6471-05 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty ServiceASTM D6471-05 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
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ASTM D6471-05 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
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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 6471 – 05
Standard Specification for
Recycled Prediluted Aqueous Glycol Base Engine Coolant
(50 Volume % Minimum) for Automobile and Light-Duty
1
Service
This standard is issued under the fixed designation D 6471; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 Thisspecificationcoverstherequirementsforarecycled 2.1 ASTM Standards:
prediluted aqueous ethylene glycol (50 volume % minimum) D 512 Test Methods for Chloride Ion in Water
baseenginecoolantandrecycledpredilutedaqueouspropylene D 516 Test Method for Sulfate Ion in Water
glycol (50 volume % minimum) base engine coolant for use in D 1119 Test Method for Ash Content of Engine Coolants
automobiles and light-duty vehicles. Committee D15 has and Antirusts
developed this specification using experience, knowledge and D 1120 Test Method for Boiling Point of Engine Coolants
research from recycling used aqueous base engine coolant and D 1121 Test Method for Reserve Alkalinity of Engine
blends of used aqueous base engine coolant and virgin glycol. Coolants and Antirusts
This standard does not apply to coolant produced from other D 1122 Test Method for Density or Relative Density of
glycol sources such as medical waste, distillation bottoms, Engine Coolant Concentrates and Engine Coolants by the
airplane/airport deicers and polyester production waste. This Hydrometer
specification provides a procedure for evaluating engine cool- D 1126 Test Method for Hardness in Water
ant recycling technologies through the recycling of a reference D 1176 Test Method for Sampling and Preparing Aqueous
synthetic used engine coolant. It also specifies the chemical, Solutions of Engine Coolants or Antirusts for Testing
physical, and performance requirements for the recycled pre- Purposes
diluted aqueous glycol base engine coolant that is produced D 1177 Test Method for Freezing Point of Aqueous Engine
from that procedure. When used without further dilution, this Coolants
product functions effectively during both winter and summer. D 1193 Specification for Reagent Water
Thismaterialisintendedtoprovideprotectionagainstfreezing, D 1287 Test Method for pH of Engine Coolants and Anti-
boiling, and corrosion in automobile or other light-duty service rusts
cooling systems. D 1293 Test Methods for pH of Water
1.2 The values stated in SI units are to be regarded as the D 1384 TestMethodforCorrosionTestforEngineCoolants
standard. The values given in parentheses are approximate in Glassware
equivalents and provided for information only. D 1881 Test Method for Foaming Tendencies of Engine
1.3 This standard does not purport to address all of the Coolants in Glassware
safety concerns, if any, associated with its use. It is the D 1882 TestMethodforEffectofCoolingSystemChemical
responsibility of the user of this standard to establish appro- Solutions on Organic Finishes for Automotive Vehicles
priate safety and health practices and determine the applica- D 1888 Test Methods for Particulate and Dissolved Matter,
3
bility of regulatory limitations prior to use. Solids, or Residue in Water
1 2
ThisspecificationisunderthejurisdictionofASTMCommitteeD15onEngine For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Coolants and is the direct responsibility of Subcommittee D15.15 on Recycled contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Engine Coolant. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved July 1, 2005. Published August 2005. Originally the ASTM website.
3
approved in 1999. Last previous edition approved in 2003 as D 6471–03. Discontinued. See 1991 Annual Book of ASTM Standards, Vol 11.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6471–05
7
D 2570 Test Method for Simulated Service Corrosion Test- such specifications are available. Other grades may be used,
ing of Engine Coolants provided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
D 2809 Test Method for Cavitation Corrosion Erosion-
the determination.
Corrosion Characteristics of Aluminum Pumps with En-
3.2 Purity of Water—Unless otherwise indicated, references
gine Coolants
to water shall be understood to mean reagent water as defined
D 2847 Practice for Testing Engine Coolants in Car and
by Type IV of Specification D 1193.
Light Truck Service
D 3306 Specification for Ethylene Glyco
...

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1.1 This specification covers the requirements for low silicate ethylene glycol base engine coolants for cooling systems of heavy-duty engines. When concentrates are used at 40 % to 60 % concentration by volume in water, or when prediluted glycol base engine coolants (50 volume % minimum) are used without further dilution, they will function effectively to provide protection against corrosion, freezing to at least −36.4 °C (−33.5 °F), and boiling to at least 108 °C (226 °F).
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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.  
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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.

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Standard Test Method for Freezing Point of Aqueous Engine Coolants

SIGNIFICANCE AND USE
5.1 The freezing point of an engine coolant indicates the coolant freeze protection.  
5.2 The freezing point of an engine coolant may be used to determine the approximate glycol or glycerin content, provided the glycol type is known.
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 Practice D1176. 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 standard. The values given in parentheses after SI units are provided for information only and are not considered 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.  
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