1、Designation: D 1119 05Standard Test Method forPercent Ash Content of Engine Coolants1This standard is issued under the fixed designation D 1119; 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
2、 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 ash contentafter
3、ignition of commercial engine coolants and antirusts, aspackaged or after use.1.2 The values stated in SI units are to be regarded as thestandard.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 stan
4、dard 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:2D 1176 Test Method for Sampling and Preparing AqueousSolutions of Engine
5、Coolants or Antirusts for TestingPurposesD 3306 Specification for Ethylene Glycol Base EngineCoolant for Automobile and Light Duty Service3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 ash, nthe components of an engine coolant notremoved by ignition at 750C.4. Summary of Test
6、 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 inorganicinhibitors used, it is not a meas
7、ure of the total inhibitorconcentration because of the loss of organic inhibitors.5.2 An ash content greater than that stated in SpecificationD 3306 may indicate a salt-based product.6. Apparatus6.1 Crucible, high-silica glass, porcelain, or platinum of50-mL capacity, equipped with cover.7. Procedur
8、e7.1 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 Weigh 20 6 0.1 g of well-
9、mixed coolant (Note 1),including all phases, into the crucible. Sample in accordancewith Test Method D 1176. Record the weight of the sample tothe nearest 0.1 mg.NOTE 1The weight of sample taken is suitable for most commercialproducts. If there is reason to believe that the ash content may be high,
10、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 the heat.(Warn
11、ingMany 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 to asupp
12、ort 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 thecruc
13、ible 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 is the direct responsibility of
14、 Subcommittee D15.04 on ChemicalProperties.Current edition approved June 1, 2005. Published June 2005. Originallyapproved in 1950. Last previous edition approved in 2000 as D 1119 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.
15、org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.5 If desired, muffle furnace ignition may be used in placeof
16、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-i
17、zation 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 for1hatthis temperature. Place the crucible and cover, with contents, ina desiccator to cool. When they have cooled to room tempera-t
18、ure, weigh the crucible, cover, and contents (ash) to the nearest0.1 mg.7.6 Repeat the ignition and cooling until constant weight isobtained.8. Calculation8.1 Calculate ash, %, as follows:ash 5A 2 BC 2 B3 100 (1)where:A = mass of crucible, cover, and ash,B = mass of crucible and cover, andC = mass o
19、f crucible, cover, and sample.9. Precision and Bias9.1 The reproducibility for engine coolants should be within620 % of the mean.10. Keywords10.1 ash; engine coolantASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this
20、 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 any time by the responsible technical committee and must be
21、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 will receive careful consideration at a meeting of therespo
22、nsible 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 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).D1119052
