Zinc hydroxide 
 Chinese name: zinc hydroxide [English name] zinc hydroxide Molecular formula] Zn (OH) 2 [type] 99.38 [density] the amount of 3.053 g / cm 3 
 Traits amorphous white powder dissolution] is almost insoluble in water, soluble in acid, alkali solution and ammonia. Preparation or sources] 
 In the zinc nitrate solution, add slightly less than the calculated amount of caustic potash in the system. [Other] an amphoteric hydroxides. At 125 ℃ decomposed into zinc oxide and water. 
 Is gender hydroxide. Zinc salts dissolved in acid generation. Soluble alkali generated zincate. And different aluminum hydroxide, zinc can be dissolved in ammonia in the ammonia complex ion generation: Zn (OH) 2 +4 NH3 = [Zn (NH3) 4] 2 + +20 H- 
 Additives for the rubber fill, surgical ointment. From the zinc salt solution obtained by adding appropriate amount of alkali solution.