ASTM D 2669:2025

1.1 This test method covers the determination of the apparent viscosity of petroleum waxes compounded with additives (hot melts). It applies to fluid hot melts having apparent viscosities up to about 20 Pa·s at temperatures up to 175 °C (347 °F). Note 1: For petroleum waxes and their blends having low apparent viscosities, below about 15 mPa·s, Test Method D445 , is especially applicable. 1.2 The values stated in SI units shall be regarded as the standard. 1.2.1 Exception- Alternative units in parentheses are for information purposes only. Note 2: One Pascal second (Pa·s) = 1000 centipoises (cP). One milliPascal second (mPa·s) = 1 centipoise (cgs units). 1.3 WARNING -Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 1.4 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. 1.5 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.

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