Liquid
Liquid means a material, with a melting point or initial melting point of 20 C (68 F) or lower at a standard pressure of 101.3 kPa (14.7 psia). A viscous material for which a specific melting point cannot be determined must be subjected to the procedures specified in ASTM D4359-90 Standard Test Method for Determining Whether a Material is Liquid or Solid (IBR, see 171.7 of this chapter).