1、Designation: D7713 12Standard Specification forAqueous Engine Coolant Grade Glycol (53% Nominal)1This standard is issued under the fixed designation D7713; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers both commercial products,engine coolant grade ethylene glycol and propylene glycol,including virgin glycols
3、 and those derived from the recyclingof vehicle engine coolants and industrial source glycols.1.2 Types EG-1 and PG-1 cover glycols with sufficientlylow limits on components to allow a blended coolant to meetmost OEM (Original Equipment Manufacturer) specifications.These types will probably be virgi
4、n materials, although redis-tillation could produce a sufficiently pure product. Types EG-2and 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 asstandard. No other units of measurement are
5、included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations pri
6、or to use.2. Referenced Documents2.1 ASTM Standards:2D1122 Test Method for Density or Relative Density ofEngine Coolant Concentrates and Engine Coolants By TheHydrometerD1123 Test Methods for Water in Engine Coolant Concen-trate by the Karl Fischer Reagent MethodD1177 Test Method for Freezing Point
7、of Aqueous EngineCoolantsD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D1287 Test Method for pH of Engine Coolants and Anti-rustsD1613 Test Method for Acidity in Volatile Solvents andChemical Intermediates Used in Paint, Varnish, Lacquer,and Related ProductsD3634 Test Method fo
8、r Trace Chloride Ion in EngineCoolantsD4052 Test Method for Density, Relative Density, and APIGravity of Liquids by Digital Density MeterD5827 Test Method for Analysis of Engine Coolant forChloride and Other Anions by Ion ChromatographyD5931 Test Method for Density and Relative Density ofEngine Cool
9、ant Concentrates and Aqueous Engine Cool-ants by Digital Density MeterD6130 Test Method for Determination of Silicon and OtherElements in Engine Coolant by Inductively CoupledPlasma-Atomic Emission SpectroscopyD6660 Test Method for Freezing Point ofAqueous EthyleneGlycol Base Engine Coolants by Auto
10、matic Phase Transi-tion MethodD7638 Test Method for Determination of Fatty Acids andEsters in GlycerinE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE202 Test Methods for Analysis of Ethylene Glycols andPropylene GlycolsE300 Practice for Sampling Industrial ChemicalsE394 Te
11、st Method for Iron in Trace Quantities Using the1,10-Phenanthroline MethodE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE1177 Specification for Engine Coolant Grade Glycol3. Requirements3.1 Engine coolant grade 53 % (nominal) ethylene glycol orpropyl
12、ene glycol shall conform to the chemical and physicalproperty requirements in Table 1.1This specification is under the jurisdiction ofASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.15 on Recycled Engine Coolant.Current edition approved May
13、 1, 2012. Published June 2012. Originallyapproved in 2011. Last previous edition approved in 2011 as D 7713 11. DOI:10.1520/D771312.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume inform
14、ation, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Sampling4.1 Sample ethylene or propylene glycol in accordance withthe appropriate sections of Practice E300 for
15、 liquid samples.5. Packaging, Package Markings, and Transportation5.1 The packaging, labeling, and transportation of commer-cial quantities shall conform to applicable federal, state, andlocal regulations. Conformance is the responsibility of themanufacturer and the shipper.6. Precision and Bias6.1
16、The precision of this test method is based on aninterlaboratory study of WK25513 Standard Specification forAqueous Engine Coolant Grade Glycol (53 % nominal), con-ducted in 2010. Each of eight laboratories tested three differentmaterials. Every “test result” represents an individual determi-nation.
17、All laboratories were asked to report three test resultsfrom a single operator, for every material. Except for theinability of all participants to report all requested replicates,Practice E691 was followed for the design and analysis of thedata; the details are given in ASTM Research Report No.D15-X
18、XXX.36.1.1 Repeatability limit (r)Two test results obtainedwithin one laboratory shall be judged not equivalent if theydiffer by more than the “r” value for that material; “r”istheinterval representing the critical difference between two testresults for the same material, obtained by the same operat
19、orusing the same equipment on the same day in the samelaboratory.6.1.1.1 Repeatability limits are listed in Table 2.6.1.2 Reproducibility limit (R)Two test results shall bejudged not equivalent if they differ by more than the “R” valuefor that material; “R” is the interval representing the criticald
20、ifference between two test results for the same material,obtained by different operators using different equipment indifferent laboratories.6.1.2.1 Reproducibility limits are listed in Table 2.6.1.3 The above terms (repeatability limit and reproducibil-ity limit) are used as specified in Practice E1
21、77.6.1.4 Any judgment in accordance with statements 6.1.1and 6.1.2 has an approximate 95 % probability of beingcorrect.6.2 BiasAt the time of the study, there was no acceptedreference material tested to determine the bias for this testmethod, therefore no statement on bias is being made.6.3 The prec
22、ision statement was determined through statis-tical examination of 51 results, from eight laboratories, onthree materials. These materials were described as:Sample Aqueous Glycol nom 4555 % “A”Sample Aqueous Glycol nom 4555 % “B”Sample Aqueous Glycol nom 4555 % “C”6.4 To judge the equivalency of two
23、 test results, it isrecommended to choose the material closest in characteristicsto the test material.7. Keywords7.1 engine coolant; ethylene; glycol; polyester; propyleneglycol, pre-diluted, recycled3For a copy of the draft Research Report, please contact Caitlin Farrell atcfarrellastm.orgRequireme
24、nt Value for 53 %Ethylene Glycol, TypeEG-1 53 %Value for 53 %Propylene Glycol, TypePG-1 53 %Value for 53 %Ethylene Glycol, TypeEG-2 53 %Value for 53 %Propylene-Glycol,PG-2 53 %ASTMTestMethodClarity Clear,no suspended matterClear,no suspended matterClear,no suspended matterClear,no suspended matterVi
25、sualColor, Pt/Co scale 25 max 25 max 100 max 100 max D1209Relative density, 20/20C 1.068 to 1.123 1.025 to 1.0331 1.068 to 1.123 1.025 to 1.0331 D1122, D4052, D5931pH 6.5to9.0 6.5to9.0 6.5to9.0 6.5to9.0 D1287Acidity as acetic acid, mass % 0.005 max 0.005 max 0.005 max 0.005 max D1613Freezing Point,
26、C (F) -40 (-40) -38 (-36) -40 (-40) -38 (-36) D1177A, D6660Glycol esters, mg/LBBBBD7638Nitrite, Nitrate, Phosphate(total, g/g)5 max 5 max 50 max 25 max D5827Silicon, g/g 5 max 5 max 5 max 5 max D6130Chloride ion, mg/L 2.5 max 2.5 max 12.5 max 12.5 max D3634, D5827CSulfate, mg/L 5 max 5 max 50 max 50
27、 max D5827Boron, g/g 5 max 5 max 25 max 25 max D5827Aluminum, Calcium, Copper,Iron, Magnesium, Lead, Zinc(total, g/g)5 max 5 max 5 max 5 max D6130Iron, g/g 1.0 max 1.0 max 1.0 max 1.0 max E394, D6130AIn case of dispute, Test Method D1177 shall be the preferred test method.BA limit for glycol esters
28、should be established by agreement between the supplier and the customer.CIn case of dispute, Test Method D3634 shall be the preferred test method.TABLE 2 Glycol Concentration (%)MaterialAverageARepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabilityLimitReproducibilityLimitxsrsR
29、rRSample A 47.4 0.27 0.73 0.77 2.04Sample B 52.1 0.47 0.89 1.32 2.50Sample C 42.0 0.37 0.89 1.04 2.49AThe average of the laboratories calculated averages.D7713 122ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this s
30、tandard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be re
31、viewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of therespons
32、ible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West
33、Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D7713 123
