Florasol or R134a is a clean refridgerant, it's illegal to vent it to the atmosphere but the talk is that it's safe. "Talk" i think i read skyhighler was ordering some can's to test.
https://www.icmag.com/ic/showthread.php?t=273223
But zho the product in specific may or may not be R134 but the speculation is where out of solvents so it's gotta be that there using.
Sometimes you have to pay more...bit of a trade off I don't mind