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Significance and Use
Waxes do not go through a sharp solid-liquid phase change when heated and therefore do not have a true melting point. As the temperature rises, waxes gradually soften or become less viscous. For this reason, the determination of the softening point must be made by an arbitrary but closely defined method if test values are to be reproducible.
This test is useful in determining the consistency of waxes, and as one element in establishing the uniformity of shipments or source of supply.
This test method has been found suitable for all types of waxes including paraffin, microcrystalline polyethylene, and natural waxes.
1.1 This test method covers the determination of the ASTM dropping point for waxes.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D566 Test Method for Dropping Point of Lubricating Grease
UNSPSC Code 12181500(Waxes)