Which division describes nonflammable, nonpoisonous gas at cryogenic conditions with 40.6 psi or greater at 68 degrees (argon)?

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Multiple Choice

Which division describes nonflammable, nonpoisonous gas at cryogenic conditions with 40.6 psi or greater at 68 degrees (argon)?

Explanation:
The main idea is that Division 2.2 covers nonflammable, nonpoisonous gases, including cryogenic liquids that vaporize to a safe, nonpoisonous gas. Argon fits this perfectly: it is not flammable and not poisonous. When stored cryogenically, argon is a liquid at very low temperature, and as it warms to room temperature it becomes a gas under pressure. That pressure consequence doesn’t change its classification—it remains a nonflammable, nonpoisonous gas, so it sits in Division 2.2. The other divisions would apply to flammable gases or toxic gases, or to explosives, which don’t describe argon.

The main idea is that Division 2.2 covers nonflammable, nonpoisonous gases, including cryogenic liquids that vaporize to a safe, nonpoisonous gas. Argon fits this perfectly: it is not flammable and not poisonous. When stored cryogenically, argon is a liquid at very low temperature, and as it warms to room temperature it becomes a gas under pressure. That pressure consequence doesn’t change its classification—it remains a nonflammable, nonpoisonous gas, so it sits in Division 2.2. The other divisions would apply to flammable gases or toxic gases, or to explosives, which don’t describe argon.

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