1、Designation:D1120111Standard 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
2、indicates 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.1NOTEEditorial corrections were made in July 2011.1.Scope*1.1 This test method covers t
3、he determination of the equi-librium boiling point 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(
4、prediluted).This test procedure is applicable to diluted solutions as wellas to concentrates.NOTE2The procedure for obtaining a representative test sample of acoolant solution that contains an antileak additive is found in Test MethodD1176.1.2 The values stated in SI units are to be regarded asstand
5、ard.The values given in parentheses are for informationonly.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 and health practices and determine the applica-bili
6、ty of regulatory limitations prior to use.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 Specification and Temperature-Electromotive F
7、orce(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 is the boiling point.4.Apparatus(see Fig
8、.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 directly centered in the flask 6.5 mm(0.26 i
9、n.)from the bottom.The flask is shown in Fig.2.4.2 CondenserThe condenser shall be of the water-cooled,reflux,glass-tube type,having a condenser jacket 200 mm(7.9in.)in length.The bottom end of the condenser shall have a1938standard-taper,drip-tip,male ground-glass joint.4.3 Boiling Stones Three or
10、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 Thermocouple)An ASTM Partial Im-mersion Thermometer,having
11、a range from 5 to 300C(20 to580F)and conforming to the requirements for Thermometer2C or 2F,as prescribed in Specification E1,or some othersuitable non-mercury containing temperature measuringdevice,such as a thermocouple,capable of operating in thesame temperature range and having equal or better a
12、ccuracy assummarized in Specification E230.See Section 10,Precisionand Bias.The data presented in this paragraph is derived usingmercury-in-glass thermometers only.4.5 Heat SourceAsuitable electric heating mantle shall beused,such that sufficient heat can be obtained to comply withthe heating and re
13、fluxing rates specified in Section 7.5.Sample5.1 To obtain a sample of unused concentrated coolant forboiling point determination,the following procedure is sug-gested:5.1.1 Allow material as received in the original container tocome to room temperature 20C(68F)but not below 20Cminimum).1This test m
14、ethod 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 March 1,2011.Published March 2011.Originallyapproved in 1950 as D1120 50 T.Last previous edition approved
15、in 2008 asD1120 08.DOI:10.1520/D1120-11E01.2For 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 ASTM website.*A Summary of Changes s
16、ection appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.2 Shake the container to mix any material that may haveseparated.5.1.3 Immediately remove desired sample for test require-ment.5.2 To prepare a dilute solution of any mixture,thoroughlymix the sample,pipet the required volume into a calibratedvolumetric flask,and add distilled water to bring the mixedcontents of the flask to the proper volume
