ASTM-D4659 › Historical Revision Information
Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates

ASTM-D4659 - 2014 EDITION - SUPERSEDED
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Standard Test Methods for Polyurethane Raw Materials: Determination of Specific Gravity of Isocyanates
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Scope

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

Significance and Use

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.

Keywords

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

To find similar documents by ASTM Volume:

08.02 (Plastics (II): D3222 - D5083)

08.03 (Plastics (III): D5117 - latest; Reinforced Plastic Piping Systems and Chemical Equipment; Plastic Building Products)

To find similar documents by classification:

83.040.30 (Auxiliary materials and additives for plastics Including fillers, extenders, hardeners, pigments, plasticizers, etc.)

83.080.20 (Thermoplastic materials)

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Document Number

ASTM-D4659-14

Revision Level

2014 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

April 1, 2014

Document Type

Test Method

Page Count

4 pages

Committee Number

D20.22