Zinc hydroxide

Zinc hydroxide is a chemical compound. Its chemical formula is Zn(OH)2. It contains zinc and hydroxide ions.

Properties
Zinc hydroxide is a white solid. It does not dissolve in water. It reacts with acids to make zinc salts. It dissolves in concentrated bases. It dissolves in ammonia to make a colorless solution. It can be heated to make zinc oxide.

Occurrence
Zinc hydroxide is found as a few rare minerals. It is not a main zinc ore.

Preparation
Zinc hydroxide can be made by reacting zinc chloride or zinc sulfate with sodium hydroxide. A dilute solution of sodium hydroxide was used so the zinc hydroxide didn't dissolve. 

Uses
Zinc hydroxide is used to absorb blood in large bandages. These bandages are used after surgery.

Related pages
Zinc bromide
Zinc fluoride

Category:Zinc compounds