... in water; freely soluble in ethanol, ether and propane-1,2-diolAssay(on dry base)98.0% - 102.0%Melting Range146 ... -150°CLoss on Drying0.5% max , 110 oC for 4hSulfated ash0.1% maxFree Acid (as Gallic Acid)0 ... Propyl Gallate, PG, CAS 121-79-9, EINECS 204-498-2