ASTM E1064 - 16
Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration
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Significance and Use
4.1 The coulometric technique is especially suited for determining low concentrations of water in organic liquids that would yield small titers by the Karl Fischer volumetric procedure. The precision and accuracy of the coulometric technique decreases for concentrations of water much greater than 2.0 % because of the difficulty in measuring the small size of sample required. The test method assumes 100 % efficiency of coulombs in iodine production. Provision is made for verifying this efficiency. (See Table 1 and Note 5.)
1. Scope
1.1 This test method covers the determination of water from 0 to 2.0 % mass in most liquid organic chemicals, with Karl Fischer reagent, using an automated coulometric titration procedure. Use of this test method is not applicable for liquefied gas products such as Liquid Petroleum Gas (LPG), Butane, Propane, Liquid Natural Gas (LNG), etc.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first-aid procedures, handling, and safety precautions.
1.4 This standard does not purport to address all of the safety problems, 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. Specific precautionary statements are given in Section 8.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1193 Specification for Reagent Water
D4672 Test Method for Polyurethane Raw Materials: Determination of Water Content of Polyols
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
E203 Test Method for Water Using Volumetric Karl Fischer Titration
ICS Code
ICS Number Code 71.080.01 (Organic chemicals in general)
UNSPSC Code
UNSPSC Code 12352401(Organic chemical mixtures)
Referencing This Standard
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DOI: 10.1520/E1064-16
Citation Format
ASTM E1064-16, Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration, ASTM International, West Conshohocken, PA, 2016, www.astm.org
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