I'm not sure what rule you are referencing in California in that they are
eliminating mineral spirits, but for printers they will still be an option.
Accoridng to proposed rule 1171, the only proposed change is to reduce the
vapor pressure from 25 mm Hg at 20oC to 10 mm Hg at 20oC. High flash naphtha
blends should be able to meet the 10 mm Hg limit.