ASTM D4419-90(2000) - 1.1.2000
 
1. Scope

1.1 This test method measures the transition temperatures of petroleum waxes, including microcrystalline waxes, by differential scanning calorimetry (DSC). These transitions may occur as a solid-solid transition or as a solid-liquid transition.

1.2 The normal operating temperature range extends from 15oC to 150oC (Note 1).

1.3 The values stated in SI units are to be regarded as the standard.

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 and health practices and determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

D87-25

Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)

D1160-24

Standard Test Method for Distillation of Petroleum Products at Reduced Pressure

D3418-21

Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry

E474-80

Method for Evaluaton of Temperature Scale for Differential Thermal Analysis (Withdrawn 1986)

E473-25a

Standard Terminology Relating to Thermal Analysis and Rheology (Includes all amendments and changes 9/11/2025).

E472-86 (1991)

Practice for Reporting Thermoanalytical Data (Withdrawn 1995)