DOT defines cryogenic liquids as starting at which temperature in Fahrenheit?

DOT defines cryogenic liquids as starting at which temperature in Fahrenheit?

• A. -130 F
• B. -100 F
• C. -200 F
• D. -80 F

Answer: (A)

Cryogenic liquids are defined by their extremely low boiling points, requiring special insulated containment and handling. For DOT, the defining boundary is a boiling point at or below -130°F. That makes -130°F the starting point for the cryogenic category. Any substance at that temperature or colder qualifies as cryogenic under this definition, while warmer liquids do not. So -100°F or -80°F aren’t cold enough to meet the threshold, whereas -200°F is colder than the boundary and would still be considered cryogenic, but the key point is the starting value: -130°F.

Cryogenic liquids are defined by their extremely low boiling points, requiring special insulated containment and handling. For DOT, the defining boundary is a boiling point at or below -130°F. That makes -130°F the starting point for the cryogenic category. Any substance at that temperature or colder qualifies as cryogenic under this definition, while warmer liquids do not. So -100°F or -80°F aren’t cold enough to meet the threshold, whereas -200°F is colder than the boundary and would still be considered cryogenic, but the key point is the starting value: -130°F.