ASTM D4928-12(2018)
Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration

Standard No.

ASTM D4928-12(2018)

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D4928-12(2018)

Scope

1.1 This test method covers the determination of water in the range from 0.02 to 5.00 mass or volume % in crude oils. Mercaptan (RSH) and sulfide (S− or H2S) as sulfur are known to interfere with this test method, but at levels of less than 500 µg ⁄g [ppm(m)], the interference from these compounds is insignificant (see Section 6). 1.2 This test method can be used to determine water in the 0.005 to 0.02 mass % range, but the effects of the mercaptan and sulfide interference at these levels has not been determined. For the range 0.005 to 0.02 mass %, there is no precision or bias statement. 1.3 This test method is intended for use with standard commercially available coulometric Karl Fischer reagent. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 8. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D4928-12(2018) Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
• ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
• ASTM D5854 Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
• ASTM E203 Standard Test Method for Water Using Volumetric Karl Fischer Titration

ASTM D4928-12(2018) history

• 2018 ASTM D4928-12(2018) Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
• 2012 ASTM D4928-12 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
• 2011 ASTM D4928-11 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
• 2000 ASTM D4928-00(2010) Standard Test Methods for Water in Crude Oils by Coulometric Karl Fischer Titration
• 2000 ASTM D4928-00(2005) Standard Test Methods for Water in Crude Oils by Coulometric Karl Fischer Titration
• 2000 ASTM D4928-00e1 Standard Test Methods for Water in Crude Oils by Coulometric Karl Fischer Titration
• 2000 ASTM D4928-00 Standard Test Methods for Water in Crude Oils by Coulometric Karl Fischer Titration