The effect of Zinc pyrithione
Zinc pyrithione (ZPT) has strong killing ability for bacteria and fungi, can effectively kill the dandruff fungus, so it will play a role of anti dandruff. Therefore ZPT is used in the shampoo industry for many well-known companies. Moreover, ZPT is widely used as a fungicide in the products of paint and plastics.
ZPT is white to yellow crystalline powder. There may be a series of characteristic odors. It does not dissolve in water, 15mg/kg in water, 35mg/kg in the water of pH=8, in fact. For other solubility, it is 100mg/kg in ethanol, and 2000mg/kg in polyethylene glycol (PEG400).
The best pH range for ZPT is 4.5 to 9.5; in fact, the PH of 10% suspension is 3.6.
The ZPT is actually a chelate, which has good effective anti - mold and anti - bacterial effect.