1、Designation: D 1120 08Standard 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. A number in paren
2、theses 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 Department of Defense.1. Scope*1.1 This test method covers the determination of the equi-librium boilin
3、g 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 procedure is appli
4、cable 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 given in parentheses a
5、re 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 limitations prior
6、 to use.2. Referenced Documents2.1 ASTM Standards:2D 1176 Practice for Sampling and Preparing Aqueous So-lutions of Engine Coolants or Antirusts for Testing Pur-posesE1 Specification for ASTM Liquid-in-Glass Thermometers3. Summary of Test Method3.1 Sixty millilitres (two ounces) of the sample are bo
7、iledunder 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 g
8、round-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, gla
9、ss-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 ThermometerAnASTM Partial Immersion Thermom-eter, having a range from 5 to 300C (20 to 580F) andconforming to the requirements for Thermometer 2C or 2F, asprescribed in Specification E1, or some other suitable non-mercury contain
11、ing temperature measuring device, such as athermocouple, capable of operating in the same temperaturerange and having equal or better accuracy. See Section 10,Precision and Bias. The data presented in this paragraph isderived using mercury-in-glass thermometers only.4.5 Heat Source A suitable electr
12、ic heating 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
13、received 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.1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and is the direct responsibility of Subcommitte
14、e D15.03 on PhysicalProperties.Current edition approved Oct. 1, 2008. Published November 2008. Originallyapproved in 1950 as D 1120 50 T. Last previous edition approved in 2004 asD 1120 94(2004).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
15、serviceastm.org. For Annual Book of ASTMStandards volume information, 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.D1120082more than 1.4C (2.5F) and, for sam
16、ples boiling above 100C(212F), results should not differ from each other by more than2.5C (4.5F).10.1.2 For unused concentrated samples boiling below100C (212F), results should not differ from each other bymore than 1.4C (2.5F), and for samples boiling above 100C(212F), results should not differ by
17、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 coolantSUMMARY OF CHANGESSubcommittee D15.03 has identified the location of selected
18、changes to this standard since the last issue(D 1120-94(2004) that may impact the use of this standard.(1) Reworded thermometer specifications.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of th
19、is 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 reviewed every five ye
20、ars 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 theresponsible technical commi
21、ttee, 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 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).D1120083
