Density 1.782 g/cm3 (25 ºC) Boiling point 253.8 ºC at 760 mmHg Melting point 262 ºC Molecular formula C10H8N2O2S2Zn Molecular weight 317.722 Flash point 107.3 ºC Accurate mass 315.931854 PSA 101.52000 LogP 3.34050 Appearance Greyish white to yellowish brown powder Vapor pressure 0.00275mmHg at 25 °C Storage condition Store in a cool, dry place. stability 1. Zinc pyrithione forms an insoluble precipitate with cationic and non-ionic surfactants, unstable to light and oxidants, and unstable to acids and bases at higher temperatures. It is not compatible with EDTA and is partially inactivated by non-ionic surfactants. Chelation or anti-chelation occurs in the presence of heavy metals Yes, and these chelates are insoluble in water. Zinc pyrithione is a chelate, which is a very effective anti-mold and anti-bacterial compound. Its anti-dandruff activity is very strong. Water Insoluble (insoluble) Molecular structure 1, molar refractive index: not useful 2, molar volume (cm3/mol) : no use 3, isotonic specific volume (90.2K) : not available 4, surface tension (dyne/cm) : no use 5, dielectric constant: no use 6, polarizability (10-24cm3) : not available 7. Single isotope mass: 315.931864 Da 8, nominal quality: 316 Da 9. Average quality: 317.7217 Da