My son had (as in not anymore) one of those 'Drinking Bird' novelties -
which I now find out is a glass vial filled with Methelene (Methylene)
Chloride mixed with a red dye. The vial broke & we now have a one foot
red patch on our white vinyl floor.

I immediately tried various chemicals (Acetone, Goof Off,and Siege - a
degreaser) to try to clean it up - but it appears the Methelene
Chloride evaporated immediately - leaving the red dye firmly implanted
in the formerly white vinyl floor.

Any tips on how to proceed?

Thanks, Cindy