1、Designation:D112022Standard Test Method forBoiling Point of Engine Coolants1This standard is issued under the fixed designation D1120;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses i
2、ndicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of the equi-librium boiling point
3、of engine coolants.The equilibriumboiling point indicates the temperature at which the sample willstart to boil in a cooling system under equilibrium conditions atatmospheric pressure.NOTE1Engine coolants may also be marketed in a ready-to-use form(prediluted).This test procedure is applicable to di
4、luted solutions as wellas to concentrates.NOTE2The procedure for obtaining a representative test sample of acoolant solution that contains an antileak additive is found in PracticeD1176.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units are
5、provided for information only and are not considered standard.1.3 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,health,and environmental practices and deter-mine
6、 the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations is
7、sued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1176 Practice for Sampling and Preparing Aqueous Solu-tions of Engine Coolants orAntirusts for Testing PurposesE1 Specification for ASTM Liquid-in-Glass ThermometersE230/E230M Spe
8、cification for Temperature-ElectromotiveForce(emf)Tables for Standardized Thermocouples3.Summary of Test Method3.1 Sixty millilitres(two ounces)of the sample are boiledunder equilibrium conditions at atmospheric pressure in a100 mL flask.The temperature of the liquid corrected forbarometric pressure
9、 is the boiling point.4.Apparatus(see Fig.1)4.1 FlaskA 100 mL round-bottom,short-neck,heat-resistant glass flask having a neck with a1938standard-taper,female ground-glass joint and a 10 mm(0.4 in.)outside diam-eter side-entering tube,so located as to permit the end of thethermometer device to be di
10、rectly centered in the flask approxi-mately 6.5 mm(0.26 in.)from the bottom.The flask is shownin Fig.2.4.2 CondenserThe condenser shall be of the water-cooled,reflux,glass-tube type,having a condenser jacket 200 mm(7.9 in.)in length.The bottom end of the condenser shall havea1938standard-taper,drip-
11、tip,male ground-glass joint.4.3 Boiling StonesThree or four silicon carbide grains,grit No.8 or other suitable inert chips,shall be used for eachdetermination.For samples exhibiting heavy foam,moreboiling chips may be added.4.4 Temperature Measuring Instrument(EnvironmentallySafe Thermometer or Ther
12、mocouple)An ASTM Partial Im-mersion Thermometer,having a range from 5 C to 300 C(20 F to 580 F)and conforming to the requirements forThermometer 2C or 2F,as prescribed in Specification E1,orsome other suitable non-mercury containing temperature mea-suring device,such as a thermocouple,capable of ope
13、rating inthe same temperature range and having equal or better accu-racy as summarized in Specification E230/E230M.See Section10,Precision and Bias.4.5 Heat SourceAsuitable electric heating mantle shall beused,such that sufficient heat can be obtained to comply withthe heating and refluxing rates sp
14、ecified in Section 7.1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.03 on Physical Properties.Current edition approved Sept.1,2022.Published September 2022.Originallyapproved in 1950 as D1120
15、50 T.Last previous edition approved in 2017 asD1120-17.DOI:10.1520/D1120-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe AST
16、M website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.15.