Zinc Oxide produced by French (indirect) process has distinct advantages over material produced by other processes, these advantages are :
1. Consistently fine particle sizes 2. Consistently high purity 3. Consistently good white color
Its uniform particle size, purity and color enable users to apply standard formulations without the complication of having to vary formulations to accomodate variations common to material from many other processes.
0.6 - 0.7 g/cm3
Insoluble in water, Alcohol soluble in acetic and mineral acid, ammonium chloride, alkalis, and ammonium hydroxide