A familiar mildew preventive and bactericide. Light yellow or white solid powder. Boiling point is 156??. High heat endurance. Stable with acid and alkaline. Applicable in wide PH range. A component in coating paper preservative in the American federal government?ˉs protocols about food, medicine and cosmeticsDosage is under 0.0016mg/cm3. A safe one because it can contact any kind of food