1、Designation:D111922Standard Test Method forPercent Ash Content of Engine Coolants1This standard is issued under the fixed designation D1119;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 parenth
2、eses 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.1.Scope1.1 This test method covers the determination of ash contentafter ignition
3、of commercial engine coolants and antirusts,aspackaged or after use.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is
4、theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific warning statements are given in 7.1 and 7.3.1.4 This international standard was developed in accor-dance
5、 with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards
6、:2D1176 Practice for Sampling and Preparing Aqueous Solu-tions of Engine Coolants orAntirusts for Testing PurposesD3306 Specification for Glycol Base Engine Coolant forAutomobile and Light-Duty Service3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 ash,nthe components of an eng
7、ine coolant notremoved by ignition at 750 C.4.Summary of Test Method4.1 To determine the ash content,the coolant is weighed,evaporated or charred,and finally ignited at a strong heat.5.Significance and Use5.1 This test method is designed to aid in identifying typesof coolants.While the ash is primar
8、ily due to the inorganicinhibitors used,it is not a measure of the total inhibitorconcentration because of the loss of organic inhibitors.5.2 An ash content greater than that stated in SpecificationD3306 may indicate a salt-based product.6.Apparatus6.1 Crucible,high-silica glass,porcelain,or platinu
9、m of50 mL capacity,equipped with cover.6.2 Muffle furnace.7.Procedure7.1 Place the crucible in a muffle furnace set to a tempera-ture between 750 C and 900 C for 15 min and allow to coolto room temperature in a desiccator;then weigh to the nearest0.1 mg.(WarningWhen handling a hot crucible,use prope
10、rcaution and safety equipment such as safety glasses,gloves,tongs,etc.)7.2 Weigh 20 g 6 0.1 g of well-mixed coolant(Note 1),including all phases,into the crucible.Sample in accordancewith Practice D1176.Record the weight of the sample to thenearest 0.1 mg.NOTE1The weight of sample taken is suitable
11、for most commercialproducts.If there is reason to believe that the ash content may be high,thesample size may be decreased to 5 g or 10 g 6 0.1 g.7.3 Place the covered crucible in a cool small sand bath ina vented hood.Raise the temperature by any convenient meansuntil the liquid is evaporated.If th
12、e sample ignites,remove theheat source until the burning ceases;then reapply the heat.(WarningMany types of coolant have tendencies to spatterupon heating,with consequent loss of sample and erroneousresults.All precautions consistent with good laboratory prac-tice should be followed.)(WarningAvoid i
13、nhalation of thefumes.)1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.04 on Chemical Properties.Current edition approved March 1,2022.Published April 2022.Originallyapproved in 1950.Last previ
14、ous edition approved in 2015 as D1119 05(2015).DOI:10.1520/D1119-22.2For 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 ASTM websit
15、e.Copyright 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 Internat
16、ional Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.17.4 When the crucible appears dry,place the crucible andcover,with contents,in a muffle furnace.(To prevent lossesfrom spattering due to rapid burning or volatilization ofconstituents,the muffle furnace shall be below 200 C whenthis transfer is made.)Raise the temperature at the maximumrate to between 750 C and 900 C and ignite for 1 h at thistemperature.Place the crucible
