ASTM_D_4007_-_11e1.pdf

Designation:D4007111Manual of Petroleum Measurement Standards(MPMS),Chapter 10.3Standard Test Method forWater and Sediment in Crude Oil by the Centrifuge Method(Laboratory Procedure)1This standard is issued under the fixed designation D4007;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.1NOTEReferenced Documents and API information was editorially corrected in July 2013.1.Scope*1.1 This test method describes the laboratory determinationof water and sediment in crude oils by means of the centrifugeprocedure.This centrifuge method for determining water andsediment in crude oils is not entirely satisfactory.The amountof water detected is almost always lower than the actual watercontent.When a highly accurate value is required,the revisedprocedures for water by distillation,Test Method D4006(APIMPMS Chapter 10.2)(Note 1),and sediment by extraction,Test Method D473(API MPMS Chapter 10.1),shall be used.NOTE1Test Method D4006(API MPMS Chapter 10.2)has beendetermined to be the preferred and most accurate method for thedetermination of water.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.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.Specific warningstatements appear in 6.1,8.3,and A1.5.4.2.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)D4006 Test Method for Water in Crude Oil by Distillation(API MPMS Chapter 10.2)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)D5854 Practice for Mixing and Handling of Liquid Samplesof Petroleum and Petroleum Products(API MPMS Chap-ter 8.3)E969 Specification for Glass Volumetric(Transfer)Pipets2.2 API Standards:3MPMS 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 8.3 Mixing and Handling of Liquid Samplesof Petroleum and Petroleum Products(ASTM PracticeD5854)MPMS Chapter 10.1 Determination of Sediment in CrudeOils and Fuel Oils by the Extraction Method(ASTM TestMethod D473)MPMS Chapter 10.2 Determination of Water in Crude Oil byDistillation(ASTM Test Method D4006)MPMS Chapter 10.4 Determination of Sediment and Waterin Crude Oil by the Centrifuge Method(Field Procedure)MPMS Chapter 10.5 Determination of Water in PetroleumProducts and Bituminous Materials by Distillation1This 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 June 1,2011.Published August 2011.Originallyapproved in 1981.Last previous edition approved in 2008 as D400708.DOI:10.1520/D4007-11E01.2For 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.3Available from American Petroleum Institute(API),1220 L.St.,NW,Washington,DC 20005-4070,www.api.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(ASTM Test Method D95)MPMS Chapter 10.6 Determination of Water and Sedimentin Fuel Oils by the Centrifuge Method(Laboratory Pro-cedures)(ASTM Test Method D1796)MPMS Chapter 10.9 Test Method for Water in Crude Oils byCoulometric Karl Fischer Titration(ASTM Test MethodD4928)2.3 IP Standard:4Methods Book,Appendix B Specification for Methylben-zenes(Toluenes)2.4 ISO Standard:5ISO 5272:1979 Toluene for Industrial UseSpecifications3.Summary of Test Method3.1 Equal volumes of crude oil and water-saturated tolueneare placed into a cone-shaped centrifuge tube