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  • ASTM
    D4007-11e1 Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure)
    Edition: 2011
    $113.57
    Unlimited Users per year

Description of ASTM-D4007 2011

ASTM D4007 - 11e1

Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure)

Active Standard ASTM D4007 | Developed by Subcommittee: D02.02

Book of Standards Volume: 05.02




ASTM D4007

Significance and Use

4.1 The water and sediment content of crude oil is significant because it can cause corrosion of equipment and problems in processing. A determination of water and sediment content is required to measure accurately net volumes of actual oil in sales, taxation, exchanges, and custody transfers. It is not anticipated that this test method, which is written with a dedicated laboratory facility in mind, is likely to be used in field test rooms or sample rooms due to safety concerns for proper ventilation and handling.

4.2 This test method may not be suitable for crude oils that contain alcohols that are soluble in water. In cases where the impact on the results may be significant, the user is advised to consider using another test method, such as Test Method D4928 (API MPMS Chapter 10.9 ).

1. Scope

1.1 This test method describes the laboratory determination of water and sediment in crude oils by means of the centrifuge procedure. This centrifuge method for determining water and sediment in crude oils is not entirely satisfactory. The amount of water detected is almost always lower than the actual water content. When a highly accurate value is required, the revised procedures for water by distillation, Test Method D4006 (API MPMS Chapter 10.2 ) ( Note 1 ), and sediment by extraction, Test Method D473 (API MPMS Chapter 10.1 ), shall be used.

Note 1 Test Method D4006 (API MPMS Chapter 10.2 ) has been determined to be the preferred and most accurate method for the determination of water.

1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements appear in 6.1 , 8.3 , and A1.5.4 .


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

API Standards

MPMSChapter10.9 Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration (ASTM Test Method )

ASTM Standards

D95 Test Method for Water in Petroleum Products and Bituminous Materials by Distillation (API MPMS Chapter 10.5)

D473 Test Method for Sediment in Crude Oils and Fuel Oils by the Extraction Method (API MPMS Chapter 10.1)

D665 Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water

D1796 Test Method for Water and Sediment in Fuel Oils by the Centrifuge Method (Laboratory Procedure) (API MPMS 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 and Petroleum Products (API MPMS Chapter 8.1)

D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products (API MPMS Chapter 8.2)

D4928 Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration (API MPMS Chapter 10.9)

D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products (API MPMS Chapter 8.3)

E969 Specification for Glass Volumetric (Transfer) Pipets

IP Standard

MethodsBook,Appendix Specification for Methylbenzenes (Toluenes)

ISO Standard

ISO5272:1979 Toluene for Industrial Use--Specifications

Keywords

centrifuge; centrifuge tube; crude oil; laboratory procedure; sampling; sediment and water; solvent;


ICS Code

ICS Number Code 75.040 (Crude petroleum)


DOI: 10.1520/D4007

ASTM International is a member of CrossRef.

ASTM D4007

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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