Zinc pyrithione also known as zinc pyrithione(吡硫酮锌), pyrithione zinc, Amaribin zinc.

This zinc complex was synthesized as early as the 1930s and used as topical antifungal or antimicrobial agent. It is a white or yellow crystalline powder at room temperature, slightly odorless and insoluble in water. Its solubility: water 15mg / kg; pH = 8 water 35mg / kg; ethanol 100mg / kg; polyethylene glycol (PEG400) 2000mg / kg. The best use of pH range 4.5 ~ 9.5; mass fraction of 10% suspension pH3.6. Zinc pyrithione and cationic and non-ionic surfactants can form insoluble precipitates. It is unstable to light and oxidizer, unstable to acids and bases at higher temperatures. It is incompatible with EDTA, nonionic surfactant will make it partially inactivated. In the presence of heavy metals, it can chelate or counter chelate, and these chelates are poorly soluble in water.

According to the provisions of EEC and GB7916-87, the maximum concentration of zinc pyrithione in cosmetics is 0.5% and should only be used in products after cleaning. A use of the concentration of 250 ~ 1000mg / kg (active), can be used for gels, creams, lotions, dusting and dandruff shampoo, but also for deodorant and disinfection products. It is also used in shampoo to dandruff, can inhibit the growth of Gram-positive, negative bacteria and mold. It can effectively care for hair, delay the aging of the hair and control the appearance of white hair and hair loss. In addition it is also used as cosmetic preservatives, oil, paint biocides; as coatings and plastic products such as fungicides, it is also widely used.

Due to the limited function of zinc pyrithione, its demand is relatively stable in foreign markets.

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