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ASTM D4659-14

Historical Revision

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

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1.1 These test methods determine the specific gravity of toluenediisocyanate and crude methylene-bis-(4-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 and health practices and determine the applicability of regulatory limitations prior to use. For specific warning and precautionary statements see Section 7.

Note 1There is no known ISO equivalent to this standard.

4.1 These test methods can be used for research or for quality control to characterize isocyanates used in polyurethane products.

4.2 A general test method for specific gravity using a digital density meter, which applies to isocyanates as well as other liquids is published in Test Method D4052.

SDO ASTM: ASTM International
Document Number D4659
Publication Date March 1, 2014
Language en - English
Page Count 4
Revision Level 14
Supercedes
Committee D20.22
Publish Date Document Id Type View
Aug. 1, 2019 D4659-19 Revision
March 1, 2014 D4659-14 Revision
Feb. 1, 2009 D4659-09 Revision
Nov. 1, 2003 D4659-03 Revision
Nov. 10, 1998 D4659-98 Revision