Zinc hydroxide Chemical Properties

Melting point:

125, decomposes [HAW93]

Density 

3.050

vapor pressure 

0Pa at 20℃

form 

colorless orthorhombic crystals

color 

colorless orthorhombic crystals, crystalline

PH

8.88(1 mM solution);8.88(10 mM solution);8.88(100 mM solution)

Water Solubility 

slightly soluble H2O [HAW93]

Solubility Product Constant (Ksp)

pKsp: 16.5

Stability:

Stable.

LogP

-1.380 (est)

CAS DataBase Reference

20427-58-1(CAS DataBase Reference)

EPA Substance Registry System

Zinc hydroxide (20427-58-1)

Zinc hydroxide Usage And Synthesis

Description

Zinc hydroxide is a white solid that usually forms in solution. It is not very stable as a dried solid, therefore a standard of zinc hydroxide is not available commercially.
Zinc hydroxide Zn(OH)2 is an amphoteric chemical compound. Both bases and acids react with zinc hydroxide. It's an insoluble hydroxide that dissolves when exposed to a strong acid. It occurs naturally as the rare minerals Wulfingite, ashoverite and sweetite. Zinc hydroxide is used as a biological absorbant often.

Chemical Properties

Colorless crystals.Decomposes at 125C. Almost insoluble in water; forms both zinc salts and zincates.

Physical properties

Colorless orthorhombic crystals; density 3.053 g/cm³; decomposes at 125°C; slightly soluble in water.

Uses

Intermediate, absorbent in surgical dressings, rubber compounding.

Preparation

The compound is prepared by adding a strong alkali to a solution of zinc sulfate or chloride: ZnSO₄ + 2NaOH → Zn(OH)₂ + Na₂SO₄.

Zinc hydroxide(20427-58-1)Related Product Information

• Zinc sulfide
• ZINC HYDROXIDE CARBONATE
• Silver chloride
• Copper(I) Cyanide
• SILVER(I) SULFIDE
• LEAD(II) SULFATE
• MAGNESIUM SULFIDE
• ChroMiuM hydroxide
• DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4
• INDIUM HYDROXIDE
• Iron hydroxide
• Cesium hydroxide
• STRONTIUM HYDROXIDE OCTAHYDRATE
• Cesium hydroxide
• Cupric hydroxide
• Sodium hydroxide
• Aluminum hydroxide
• Zinc sulfate monohydrate