1.1 本试验方法包括测定蜡的ASTM滴点。 1.2 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 蜡在加热时不会经历剧烈的固液相变，因此没有真正的熔点。随着温度升高，蜡逐渐软化或变得不那么粘稠。因此，如果测试值是可重复的，则必须通过任意但严格定义的方法确定软化点。 4.2 该测试有助于确定蜡的稠度，并作为确定装运或供应来源一致性的一个因素。 4.3 该试验方法适用于所有类型的蜡，包括石蜡、微晶聚乙烯和天然蜡。

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 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. 4.2 This test is useful in determining the consistency of waxes, and as one element in establishing the uniformity of shipments or source of supply. 4.3 This test method has been found suitable for all types of waxes including paraffin, microcrystalline polyethylene, and natural waxes.