Ask X3What does 49 CFR 173.305 (Charging of cylinders with a mixture of compressed gas and other material) require?
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Based on 49 CFR 173.305, the requirements for charging and shipping mixtures of compressed gas and other materials are as follows:
* General Shipping Requirement: You must ship a mixture of a compressed gas and any other material as a compressed gas if the mixture qualifies as a compressed gas under § 173.115 and does not violate § 173.301(a).
* Filling Limits: The liquid portion of a liquefied compressed gas at 131 °F, combined with any additional liquid or solid, must not completely fill the container.
* Nonpoisonous and Nonflammable Mixtures (e.g., insecticides): These must be shipped in cylinders as prescribed in § 173.304(a), or they may be shipped in Specification 2P inside metal containers that meet specific safety and packaging rules:
* Containers must have safety relief devices approved by the Associate Administrator (examined by the Bureau of Explosives).
* Containers must be packed in strong wooden or fiber boxes designed to protect valves from damage or accidental functioning during transport.
* The pressure in the container cannot exceed 85 psia at 70 °F.
* Every completed metal container filled for shipment must be heated until its contents reach a minimum temperature of 130 °F without showing any leakage, distortion, or other defects.
* Each outside shipping container must be clearly marked with: “INSIDE CONTAINERS COMPLY WITH PRESCRIBED SPECIFICATIONS.”
* Poisonous Mixtures: If a mixture contains a poisonous material (Division 6.1 or 2.3) that classifies the mixture as poisonous under § 173.115 or § 173.132, you must ship it in packagings authorized for those specific poisonous materials.