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  • ASTM
    D4659-19 Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates
    Edition: 2019
    $76.13
    Unlimited Users per year

Description of ASTM-D4659 2019

ASTM D4659-19

Active Standard: Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates




ASTM D4659

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.


Keywords

density; hydrometer; isocyanates; polyurethane raw materials; pycnometer; specific gravity;


ICS Code

ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics)


DOI: 10.1520/D4659-19

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