GSO ISO 10337:2009

ISO 10337:1997
Gulf Standard   Current Edition · Approved on 11 February 2009

Crude petroleum - determination of water - Coulometric Karl Fischer Titration Method

GSO ISO 10337:2009 Files

English 12 Pages
Current Edition Reference Language

GSO ISO 10337:2009 Scope

This International Standard specifies a coulometric Karl Fischer titration method for the direct determination of water in crude petroleum. It covers the range 0,050 % (m/m) to 5,00 % (m/m) water in crude petroleum containing less than 0,05 % (m/m) but more than 0,005 % (m/m) of either mercaptan sulfur or sulfide ion sulfur or both. It covers the range 0,020 % (m/m) to 5,00 % (m/m) water in crude petroleum containing less than 0,005 % (m/m) of either mercaptan sulfur or sulfide ion sulfur or both. NOTE 1 A number of substances and classes of compounds associated with condensation or oxidation-reduction reactions interfere in the determination of water by Karl Fischer titration. However, the only likely interfering substances present in crude petroleum are mercaptans and ionic sulfides and providing that they are present at levels less than 0,05 % (m/m), the interference is insignificant when determining water in the range 0,050 % (m/m) to 5,00 % (m/m). NOTE 2 An alternative procedure is provided in annex B for the direct determination of water over the range 0,05 % (V/V) to 5,00 % (V/V) in crude petroleum containing less than 0,05 % (V/V) of either mercaptan sulfur or ionic sulfide sulfur or both. The limitations under which this alternative volume measurement may be used are listed in annex B. The volume measurement may also be used to determine water in the range 0,02 % (V/V) to 5,00 % (V/V) if the above interfering substances are present at levels of less than 0,005 % (V/V) as either mercaptan sulfur or ionic sulfide sulfur or both. NOTE 3 For the purposes of this International Standard, the terms "% (m/m)" and "% (V/V)" are used to represent the mass and volume fractions respectively

Best Sellers From Oil and Gas Sector

GSO 1180:2021
 
Gulf Standard
Automatic transmission fluid (ATF)
GSO 672:2010
 
Gulf Standard
Liquefied petroleum gases (LPG) for household use( mixture of commerical propane and butane).
GSO 1161:2021
 
Gulf Standard
HLP HYDRAULIC OILS
GSO 2196:2021
 
Gulf Standard
Gulf Guide of Standard Specification for Unleaded Gasoline

Recently Published from Oil and Gas Sector

GSO ASTM D6138:2025
ASTM D6138:23a 
Gulf Standard
Standard Test Method for Determination of Corrosion-Preventive Properties of Lubricating Greases Under Dynamic Wet Conditions (Emcor Test)
GSO ASTM D4289:2025
ASTM D4289:24a 
Gulf Standard
Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids
GSO ISO 23581:2025
ISO 23581:2024 
Gulf Standard
Petroleum products and related products — Determination of kinematic viscosity — Method by Stabinger type viscometer
GSO ISO 3924:2025
ISO 3924:2019 
Gulf Standard
Petroleum products — Determination of boiling range distribution — Gas chromatography method