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Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
NORMA vydaná dňa 1.7.2018
Označenie normy: ASTM D4928-12(2018)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.7.2018
Kód tovaru: NS-856840
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
coulometric, crude oils, homogenization, Karl Fischer, titration, water, water in crude oils,, ICS Number Code 75.040 (Crude petroleum)
Significance and Use | ||||||||||||||||
5.1 The accurate analysis of a crude oil sample to determine the water content is important in the refining, purchase, sale, or transfer of crude oils. |
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1. 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 H1.2 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. 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. |
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2. Referenced Documents | ||||||||||||||||
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