ASTM_D_4006_-_11_2012e1.pdf

Designation:D400611(Reapproved 2012)1Manual of Petroleum Measurement Standards(MPMS),Chapter 10.2Standard Test Method forWater in Crude Oil by Distillation1This standard is issued under the fixed designation D4006;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.This standard has been approved for use by agencies of the Department of Defense.1NOTEAPI information was editorially corrected in July 2013.1.Scope*1.1 This test method covers the determination of water incrude oil by distillation.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 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 specificwarning statements,see 6.1 and A1.1.2.Referenced Documents2.1 ASTM Standards:2D95 Test Method for Water in Petroleum Products andBituminous Materials by Distillation(API MPMS Chapter10.5)D473 Test Method for Sediment in Crude Oils and Fuel Oilsby the Extraction Method(API MPMS Chapter 10.1)D665 Test Method for Rust-Preventing Characteristics ofInhibited Mineral Oil in the Presence of WaterD1796 Test Method for Water and Sediment in Fuel Oils bythe Centrifuge Method(Laboratory Procedure)(APIMPMS Chapter 10.6)D4057 Practice for Manual Sampling of Petroleum andPetroleum Products(API MPMS Chapter 8.1)D4177 Practice for Automatic Sampling of Petroleum andPetroleum Products(API MPMS Chapter 8.2)D4928 Test Method for Water in Crude Oils by CoulometricKarl Fischer Titration(API MPMS Chapter 10.9)E123 Specification forApparatus for Determination of Waterby Distillation2.2 API Standards:MPMS Chapter 8.1 Manual Sampling of Petroleum andPetroleum Products(ASTM Practice D4057)MPMS Chapter 8.2 Automatic Sampling of Petroleum andPetroleum Products(ASTM Practice D4177)MPMS Chapter 10.1 Test Method for Sediment in CrudeOils and Fuel Oils by the Extraction Method(ASTM TestMethod D473)MPMS Chapter 10.4 Determination of Water and/or Sedi-ment in Crude Oil by the Centrifuge Method(FieldProcedure)MPMS Chapter 10.5 Test Method for Water in PetroleumProducts and Bituminous Materials by Distillation(ASTM Test Method D95)MPMS Chapter 10.6 Test Method for Water and Sediment inFuel Oils by the Centrifuge Method(Laboratory Proce-dure)(ASTM Test Method D1796)MPMS Chapter 10.9 Test Method for Water in Crude Oils byCoulometric Karl Fischer Titration(ASTM Test MethodD4928)3.Summary of Test Method3.1 The sample is heated under reflux conditions with awater immiscible solvent which co-distills with the water in thesample.Condensed solvent and water are continuously sepa-rated in a trapthe water settles in the graduated section of thetrap,and the solvent returns to the distillation flask.4.Significance and Use4.1 A knowledge of the water content of crude oil isimportant in the refining,purchase,sale,or transfer of crudeoils.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and the API Committee onPetroleum Measurement and is the direct responsibility of Subcommittee D02.02/COMQ on Hydrocarbon Measurement for Custody Transfer(Joint ASTM-API).Current edition approved Nov.1,2012.Published December 2012.Originallyapproved in 1981.Last previous edition approved in 2011 as D400611.DOI:10.1520/D4006-11R12E01.2For 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.*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 4.2 This test method may not be suitable for crude oils thatcontain alcohols that are soluble in water.In cases where theimpact on the results may be significant,the user is advised toconsider using another test method,such as Test MethodD4928(API MPMS Chapter 10.9).5.Apparatus5.1 The preferred apparatus,shown in Fig.1,consists of aglass distillation flask,a condenser,a graduated glass trap,3anda heater.Other types of distillation apparatus are specified inSpecification E123.Any of these apparatus will be acceptablefor this test method provided it can be demonstrated that theyoperate within the precision established with the preferredapparatus.5.1.1 Distillation FlaskA 1000-mL round-bottom,glass,distillation flask fitted with a 24/40 female taper joint shall beused.This flask receives a 5-mL calibrated,graduated watertrap with 0.05-mL graduations.