Use OSHA approved containers
Is illegal
If it is being operated across state lines, yes - any CMV with a GVWR in excess of 10,000 lbs. requires a DOT medical card for interstate usage. An F350 has a GVW ~13,000 lbs.If it is transporting a quantity of hazardous materials which requires placards to be displayed, it requires a Class C (minumum) CDL and hazmat endorsement, and a DOT medical card is requires.If it is towing a trailer with a GVW in excess of 10,000 lbs., and the Gross Combined Weight Rating of truck and trailer is in excess of 26,000 lbs, then a Class A CDL is required, as is a DOT medical card.If it is a bus designed to transport more than 15 persons, then a Class C CDL (minimum) is required, with a passenger endorsement, and a DOT medical card is also required.
Tanks marked DOT 4BA
The process that requires you to recover refrigerant from a system and store it in an external container is Recovery. This involves removing the refrigerant from the system and transferring it to a separate container for proper handling and disposal.
R-134a is the only refrigerant approved by the automotive industry. It requires conversion to be used in an R-12 system.
If you ship hazardous materials from, to, within or through the territory of the United States you must comply with the DOT regulations governing transportation of hazardous materials.
This requires knowing type of refrigerant and temperatures the system is running at. The test or work book will have all this info so you can work it out.
Catalytic heaters approved by DOT can be used.
Most likely the refrigerant you need is 134a, there should be a sticker somewhere in the engine compartment telling you the type and how much your system requires.
Reclaim
It requires both.