ASTM D721 - 06(2011)

    Standard Test Method for Oil Content of Petroleum Waxes

    Active Standard ASTM D721 | Developed by Subcommittee: D02.10.0A

    Book of Standards Volume: 05.01


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    Significance and Use

    The oil content of a wax may have significant effects on several of its properties, such as strength, hardness, flexibility, scuff resistance, coefficient of friction, coefficient of expansion, melting point, and oil straining. The importance of these effects may be dependent upon the ultimate use of the wax.

    1. Scope

    1.1 This test method covers the determination of oil in petroleum waxes having a congealing point of 30°C (86°F) or higher as determined in accordance with Test Method D938, and containing not more than 15 % of oil.

    Note 1—With some types of waxes, of oil contents greater than 5 %, there may be an incompatibility with MEK resulting in the formation of two liquid phases. If this occurs, the test method is not applicable to the material under test.

    1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.


    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

    D938 Test Method for Congealing Point of Petroleum Waxes, Including Petrolatum

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E128 Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use


    ICS Code

    ICS Number Code 75.140 (Waxes, bituminous materials and other petroleum products)

    UNSPSC Code

    UNSPSC Code 12181500(Waxes)


    DOI: 10.1520/D0721-06R11

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