ASTM-UOP481:2010 Edition

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UOP481-10 Water in Liquid Hydrocarbons, and Heavy Hydrocarbons by Vaporizer, using Coulometry

Published By	Publication Date	Number of Pages
ASTM	2010	13

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Description

ASTM UOP481-10

Active Standard: Water in Liquid Hydrocarbons, and Heavy Hydrocarbons by Vaporizer, using Coulometry

ASTM UOP481

Scope

This method is for determining the water content of liquid hydrocarbons (naphtha, gasoline, kerosene, diesel), or other petroleum products (sulfolane and other solvents) that are liquid at room temperature using coulometric Karl Fisher titration. The lower limit of quantitation for the titrator is 10 μg of water. This results in an applicable concentration range for a sample of 10 mg/kg (massppm) to 2 mass-% water.

Heavy hydrocarbons (insoluble oils and waxes) and other hydrocarbons that are viscous or solid at room temperature can be accommodated using a vaporizer for determining dissolved trace water and is applicable to samples over a concentration range of 20 mg/kg to 2 mass-% water.

Samples containing less than 500 mg/kg of water can be collected in prepared dry bottles or syringes as described in the Appendix.

Other applications for moisture and common interferences are discussed in Notes 1 and 2.

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Additional information

Standard Title	UOP481-10 Water in Liquid Hydrocarbons, and Heavy Hydrocarbons by Vaporizer, using Coulometry
Published Code	ASTM
Publication Date	2010
Pages Count	13