5.1.1 Aromatic Solvent—The following aromatic solvents
are acceptable:
5.1.1.1 Industrial Grade Xylene—(Warning—Flammable.
Vapor harmful.)
5.1.1.2 A blend of 20 volume % industrial grade toluene and
80 volume % industrial grade xylene. (Warning—Flammable.
Vapor harmful.)
5.1.1.3 Petroleum or Coal Tar Naphtha, free of water,
yielding not more than 5% distillates at 125°C (257°F) and not
less than 20% at 160°C (320°F) and with a relative density
(specific gravity) not lower than 0.8545 at 15.56/15.56°C
(60/60°F). (Warning—Extremely flammable. Harmful if inhaled.
Vapors may cause fire.)