1、Designation: D 1120 94 (Reapproved 2004)Standard Test Method forBoiling Point of Engine Coolants1This standard is issued under the fixed designation D 1120; 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 (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method covers the determination of the e
3、qui-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.NOTE 1Engine coolants may also be marketed in a ready-to-use form(prediluted). This test
4、procedure is applicable to diluted solutions as wellas to concentrates.NOTE 2The procedure for obtaining a representative test sample of acoolant solution that contains an antileak additive is found in Test MethodD 1176.1.2 The values stated in SI units are to be regarded asstandard. The values give
5、n 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-bility of regulatory
6、 limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 1176 Test Method for Sampling and Preparing AqueousSolutions of Engine Coolants or Antirusts for TestingPurposesE 1 Specification for ASTM Thermometers3. Summary of Test Method3.1 Sixty millilitres (two ounces) of the sample are
7、boiledunder equilibrium conditions at atmospheric pressure in a100-mL flask. The temperature of the liquid corrected forbarometric pressure is the boiling point.4. Apparatus (Fig. 1)4.1 FlaskA 100-mL round-bottom, short-neck, heat-resistant glass flask having a neck with a1938 standard-taper,female
8、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 bulb to be directly centered in the flask 6.5 mm(0.26 in.) from the bottom.3The flask is shown in Fig. 2.4.2 CondenserThe condenser shall be of the water-cooled, reflux, gl
9、ass-tube type, having a condenser jacket 200mm (7.9 in.) in length. The bottom end of the condenser shallhave a1938 standard-taper, drip-tip, male ground-glass joint.4.3 Boiling Stones Three or four silicon carbide grains,4grit No. 8 or other suitable inert chips, shall be used for eachdetermination
10、 For samples exhibiting heavy foam, moreboiling chips may be added.4.4 Thermometer An ASTM Partial Immersion Ther-mometer, having a range from 5 to + 300C (20 to 580F)and conforming to the requirements for Thermometer 2C or 2F,as prescribed in Specification E 1.4.5 Heat Source A suitable electric h
11、eating mantle shallbe used, such that sufficient heat can be obtained to complywith the heating and refluxing 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 rece
12、ived in the original container tocome to room temperature (20C (68 F) but not below 20Cminimum).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
13、 pipet the required volume into a calibratedvolumetric flask, and add distilled water to bring the mixed1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and is the direct responsibility of Subcommittee D15.03 on PhysicalProperties.Current edition approved May 1, 2
14、004. Published June 2004. Originallyapproved in 1950 as D 1120 50 T. Last previous edition approved in 1998 asD 1120 94(1998)e1.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informatio
15、n, refer to the standards Document Summary page onthe ASTM website.3The short-neckflask shown in Fig. 2 can be purchased from S.G. to be subtractedin case barometric pressure is above 760 mm.D 1120 94 (2004)2more than 1.4C (2.5F), and for samples boiling above 100C(212F), results should not differ b
16、y more than 5.6C (10F).10.2 BiasSince there is no accepted reference materialsuitable for determining the bias for the procedure in this testmethod, bias has not been determined.11. Keywords11.1 boiling point; engine coolantASTM International takes no position respecting the validity of any patent r
17、ights asserted in connection with any item mentionedin this standard. 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 a
18、ny time by the responsible technical committee and must be reviewed 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
19、will receive careful consideration at a meeting of theresponsible 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
20、ASTM International, 100 Barr Harbor Drive, PO Box C700, West 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).D 1120 94 (2004)3
