ItemsSpecificationsAppearance:White crystalsContent:99.0 - 101.0%Clarity and color of solution:Colorless, clearWater:13-15%Melting point:226 - 230 °CArsenic:0.0002% maxHeavy metals:0.0010% maxForeign substance:0.0010% maxFree acid and alkali:ConformsBenzoate and Salicylate:ConformsO-& P-Toluene Sufonamide0.0010% maxReadily carbonized substances:Lower than standard