1、Designation:D111905(Reapproved 2015)Standard 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
2、number in parentheses 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 conte
3、ntafter ignition 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 wi
4、th 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 to use.Specific warningstatements are given in 7.1 and 7.3.2.Referenced Documents2.1 ASTM Standards:2D1176 Practice f
5、or 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 engine coolant notrem
6、oved by ignition at 750C.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 primarily due to the inor
7、ganicinhibitors 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 platinum of50-mL capacity,
8、equipped with cover.7.Procedure7.1 Ignite the crucible and cover over a Meker burner for 5min and allow to cool to room temperature in a desiccator;thenweigh to the nearest 0.1 mg.(WarningWhen handling a hotcrucible use proper caution and safety equipment such as safetyglasses,gloves,tongs,etc.)7.2
9、Weigh 20 6 0.1 g of well-mixed coolant(Note 1),including all phases,into the crucible.Sample in accordancewith Test Method D1176.Record the weight of the sample tothe nearest 0.1 mg.NOTE1The weight of sample taken is suitable for most commercialproducts.If there is reason to believe that the ash con
10、tent may be high,thesample size may be decreased to 5 or 10 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 the sample ignites,remove theheat source until the burning ceases;then reapply t
11、he 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 inhalation of thefumes.)7.4 When the crucible appears dry,transfer the crucible
12、 to asupport over a Meker-type burner.Ignite strongly at red heatuntil all carbonaceous material disappears from both crucibleand cover.The crucible cover may be removed and carefullyignited,directly if desired,taking care to avoid losing anymaterial deposited on the underside of the cover.Place the
13、crucible and cover,with contents,in a desiccator to cool.Whenthey have cooled to room temperature,weigh the crucible,cover,and contents(ash)to the nearest 0.1 mg.Proceed to 7.6.1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct re
14、sponsibility of SubcommitteeD15.04 on Chemical Properties.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1950.Last previous edition approved in 2009 as D1119 05(2009).DOI:10.1520/D1119-05R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact A
15、STM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.5 If desired,muffle furnace igni
16、tion may be used in placeof the Meker-type burner.If a muffle furnace is used,proceedas specified in 7.1 through 7.3,and then complete the proce-dure as follows:When the crucible appears dry,place thecrucible and cover,with contents,in a muffle furnace.(Toprevent losses from spattering due to rapid burning or volatil-ization of constituents,the muffle furnace shall be below 200Cwhen this transfer is made.)Raise the temperature at themaximum rate to between 750 and 900C and ignite for 1 h atthis
