I wouldn’t worry about the R32 as it’s really, really, rare to have leaks in sealed systems (systems without hose connections). You’re more likely to win the lottery.
As to performance, I know that a mix of propane and butane is a drop-in replacement for R12 and performs just as good. I don’t know for sure for your refrigerant, but I suspect it performs fine.
Early refrigerators ran on sulfur dioxide.
Gemini:
“Yes, some of the earliest home refrigerators used sulfur dioxide gas as a refrigerant.
Introduced in the late 1910s and 1920s, these systems were effective but dangerous, as any leaks could release toxic and corrosive gas. They were largely replaced by Freon in the 1930s.”
R-12 reportedly caused the diminution of Earth’s protective ozone layer.
It works fine for my barn-man cave. Swamp cooler in the barn, window unit in the man cave. 68F, it really chills the room! Texas heat is here. No 100F yet, later than normal.
Less than $500 for a 10,000 btu unit, Home Depot.