ASTM_D_2982_-_07_2013.pdf

Designation:D298207(Reapproved 2013)Standard Test Methods forDetecting Glycol-Base Antifreeze in Used Lubricating Oils1This standard is issued under the fixed designation D2982;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the qualitative determinationof glycol-base antifreeze in used lubricating oils(mineral base)by two procedures,one using reagents in tablet form and theother using laboratory shelf reagents.Principally the testmethods detect ethylene glycol but will also detect other1,2-glycols that may be present.1.1.1 When a positive result is obtained and a sample of theunused oil is available,the unused oil is also tested and used asa reference.NOTE1Since the inception of this test method(1971),there have beenmany changes in base stock technology and additive technology.Therefore,when available,the new,unused oil,or a sample of the sameused oil,known to not contain antifreeze,is tested as a reference.1.2 The tablet procedure(Procedure A)is sensitive to about100 mg/kg and the shelf reagent procedure(Procedure B)toabout 300 mg/kg of ethylene glycol.1.3 Glycol-based coolant leaks into crankcases may not bedetected or may result in a low bias using these test methods ifthe glycol has degraded or been thermally or otherwiseoxidized.The conditions in crankcases may be such thatcontaminant glycols are oxidized or degraded to a degree towhich the color indicator reaction does not occur or is biasedenough so as to not trigger the color change.Other testmethods for the detection of coolants or coolant additives inlubricating oils should be used if the results from these testmethods alone are inconclusive or questionable.1.4 Carbohydrates such as sugars and sugar-containingsubstances are sometimes used for sabotage purposes.If thepresence of these substances is suspected,Procedure A con-tains a modification to remove these interferences.1.5 Both procedures are adaptable to field kit use,and briefdescriptions for converting to field kit form are given in AnnexA1.1.5.1 Commercial field testing kits are available.2,31.6 The results obtained by this method are qualitativeexpressions.However,for the preparation of reagents and inthe procedures,acceptable SI units are to be regarded as thestandard.1.7 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 to use.2.Referenced Documents2.1 ASTM Standards:4D95 Test Method for Water in Petroleum Products andBituminous Materials by DistillationD1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum,PetroleumProducts,and LubricantsD4177 Practice for Automatic Sampling of Petroleum andPetroleum Products3.Terminology3.1 Definitions:3.1.1 glycol-base antifreeze,nin engine coolants,ethyleneor propylene glycol commonly used in admixture with waterand additives to lower the coolant freezing point.3.1.2 used oil,nany oil that has been in a piece ofequipment(for example,an engine,gear box,transformer,orturbine)whether operated or not.3.1.2.1 DiscussionIn the development of this test method,1These test methods are under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and are the direct responsibility of Subcommit-tee D02.06 on Analysis of Lubricants.Current edition approved May 1,2013.Published August 2013.Originallyapproved in 1971.Last previous edition approved in 2007 as D2982 07.DOI:10.1520/D2982-07R13.2The sole source of supply of the apparatus known to the committee at this timeis the Gly-Tek Test Kit available from the Nelco Co.,1047 McKnight Rd.,S.,St.Paul,MN 55119.In Canada,it is available from Metro Tech PreventativeMaintenance Ltd.,112-5621,11th St.,N.E.,Calgary,AB,Canada T2E 6Z7.3If you are aware of alternative suppliers,please provide this information toASTM International Headquarters.Your comments will receive careful consider-ation at a meeting of the responsible technical committee,1which you may attend.4For 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 website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the used oil is a mineral lubricating oil from an enginecrankcase.D41754.Summary of Test Methods4.1 The ethylene glycol is extracted from the sample with anacid solution and oxidized to formaldehyde with periodic acidwhich is