How acid and alkali stable are Shepherd Color pigments?
Most are stable in acidic or basic solutions. Violet 11 is unstable in alkali; Violet 92 is unstable in acids; Violet 102 is unstable in aqueous solutions.
Most are stable in acidic or basic solutions. Violet 11 is unstable in alkali; Violet 92 is unstable in acids; Violet 102 is unstable in aqueous solutions.