There are plastics and plastics. Also, the acetone content is low in nail polish remover.
My favorite ATF/acetone jar is the crinkly, clear Boush and Lomb contact lens solution containers.
They have a flip top and a teeny-weeny hole so you can shoot accurately
Says 100% acetone on the ones I buy :lol:
Works well on rust, I put a bit in a dollar tree spray bottle with ATF and spray.
The dollar tree bottle is distorted but sprays fine.
Works wonders on rusty hardware. As good as kroil or pb for what I use it for.