ASTM-D4928 2011

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D4928-11 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration

Published By	Publication Date	Number of Pages
ASTM	2011	5

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Description

1.1 This test method covers the determination of water in the range from 0.02 to 5 mass or volume % in crude oils. Mercaptan (RSH) and sulfide (S ^? or H ₂ S) as sulfur are known to interfere with this test method, but at levels of less than 500 ? g/g (ppm), the interference from these compounds is insignificant (see Section 5).

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.

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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Summary of Test Method
2	Significance and Use Interferences Apparatus Reagents and Materials Sampling and Test Specimens
3	Preparation of Apparatus Standardization Procedure TABLE 1
4	Calculation Report Precision and Bias TABLE 2
5	Keywords

Additional information

Standard Title	D4928-11 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
Published Code	ASTM
Publication Date	2011
Pages Count	5

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ASTM-D4928 2011

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