ASTM D4659-19 PDF

Scope: 1.1 These test methods determine the specific gravity of toluenediisocyanate, polymeric (methylene phenylisocyanate), and liquid methylene di(phenylisocyanate). These test methods also are applicable to many other liquids. (See Note 1.) 1.1.1 Test Method A—Specific gravity by pycnometer, for high-accuracy determination. 1.1.2 Test Method B—Specific gravity by hydrometer, for a less accurate, but rapid, determination. 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 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. NOTE 1—There is no known ISO equivalent to this standard. 1.4 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.

ASTM D4659-19 Referenced Document

ASTM D1193 Standard Specification for Reagent Water
ASTM D4052 Standard Test Method for Density and Relative Density of Liquids by Digital Density Meter
ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
ASTM D891 Standard Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals
ASTM E100 Standard Specification for ASTM Hydrometers
ASTM E202 Standard Test Methods for Analysis of Ethylene Glycols and Propylene Glycols
ASTM E2251 Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids*， 2021-12-01 Update
ASTM E2935 Standard Practice for Evaluating Equivalence of Two Testing Processes*， 2021-06-01 Update
ASTM E456 Standard Terminology for Relating to Quality and Statistics

2019 ASTM D4659-19 Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates
2014 ASTM D4659-14 Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates
2009 ASTM D4659-09 Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates
2003 ASTM D4659-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates
1998 ASTM D4659-98 Standard Test Methods for Polyurethane Raw Materials Determination of Specific Gravity of Isocyanates