ASTM D4659 - 14

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

    Active Standard ASTM D4659 | Developed by Subcommittee: D20.22

    Book of Standards Volume: 08.02


      Format Pages Price  
    PDF Version 4 $37.00   ADD TO CART
    Print Version 4 $37.00   ADD TO CART
    Standard + Redline PDF Bundle 8 $44.40   ADD TO CART


    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.

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


    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

    D883 Terminology Relating to Plastics

    D891 Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals

    D1193 Specification for Reagent Water

    D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

    E100 Specification for ASTM Hydrometers

    E202 Test Methods for Analysis of Ethylene Glycols and Propylene Glycols

    E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids


    ICS Code

    ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics); 83.080.20 (Thermoplastic materials)

    UNSPSC Code

    UNSPSC Code 12352118(Cyanates or isocyanates or thiocyantes or isothiocyanates)


    DOI: 10.1520/D4659

    ASTM International is a member of CrossRef.

    ASTM D4659

    Citing ASTM Standards
    Back to Top