ASTM_E_2664_-_16.pdf

Designation:E266416Standard Test Method forMethanol Wall Wash of Marine Vessels Handling PolyesterGrade Monoethylene Glycol1This standard is issued under the fixed designation E2664;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.Scope*1.1 This test method covers the methanol wall wash proce-dure and the chemical and physical analysis of the wall washsampling for cargo tanks of marine vessels handling polyestergrade monoethylene glycol.The key sections for the wall washprocedure and test methods appear in the following order:SectionsWall Wash Procedure7 and 8Appearance9 11Color12 14Hydrocarbons15 17Chloride18 211.2 The values given in SI units are to be considered as thestandard.No other units of measurement are included in thisstandard.1.3 Review the current Safety Data Sheet(SDS)for detailedinformation concerning toxicity,first aid procedures and safetyprecautions.1.4 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.For specific hazardstatements,see Section 6.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD1209 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)D1722 Test Method for Water Miscibility of Water-SolubleSolventsD4176 Test Method for Free Water and Particulate Contami-nation in Distillate Fuels(Visual Inspection Procedures)D5386 Test Method for Color of Liquids Using TristimulusColorimetryE180 Practice for Determining the Precision of ASTMMethods for Analysis and Testing of Industrial and Spe-cialty Chemicals(Withdrawn 2009)3E2469 Test Method for Chloride in Mono-,Di-and Tri-ethylene Glycol by Ion ChromatographyE2680 Test Method for Appearance of Clear,TransparentLiquids(Visual Inspection Procedure)3.Significance and Use3.1 The methanol wall wash test is performed to determinethe cleanliness and suitability of cargo tanks or compartmentson a marine vessel prior to loading polyester grade monoeth-ylene glycol.Polyester grade monoethylene glycol has veryhigh quality requirements and must be handled with care,as itis adversely affected by oxygen,hydrocarbons,water andchloride.It is especially susceptible to aromatic contamination,which degrades UV transmittance.Possible sources of con-tamination are the prior cargoes and cleaning agents.Themethanol wall wash procedure provides a representative sam-pling of the impurities and contamination present on the sidesof the cargo tank.3.2 The test methods used for analysis of the methanol wallwash samples are capable of determining low levels ofimpurities or contamination in methanol.These tests includeappearance,color,hydrocarbons and chloride.The producersof polyester grade monoethylene glycol need confirmation ofthe cleanliness and suitability of the marine vessels tanks priorto loading with in-specification material.Cargo tanks that donot pass the wall wash test should not be loaded.3.3 Alternative test methods and technology for several ofthe methods can be found in the Appendix.The alternative testmethods do not have precision data for the application of thesemethods in analyzing methanol.Use of these methods isoptional and individuals using the alternative methods shouldassure themselves that the method is sufficiently precise.Precision data is only for the original test methods listed.1This test method is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility ofSubcommittee D16.16 on Industrial and Specialty Product Standards.Current edition approved Jan.1,2016.Published February 2016.Originallyapproved in 2009.Last previous edition approved in 2009 as E2664 09a.DOI:10.1520/E2664-16.2For 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 website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Purity of Reagents4.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents conform to the specifications of the Committee onAnalytical Reagents of the American Chemical Society(ACS)where such specifications are available.4Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit i