Cryogenic liquid.
(g) Cryogenic liquid. A cryogenic liquid means a refrigerated liquefied gas having a boiling point colder than 90 C (130 F) at 101.3 kPa (14.7 psia) absolute. A material meeting this definition is subject to requirements of this subchapter without regard to whether it meets the definition of a non-flammable, non-poisonous compressed gas in paragraph (b) of this section.