Zinc hydroxide is a chemical compound that is commonly used in various industrial applications. It is a white solid that is insoluble in water and has the chemical formula Zn(OH)₂. In this article, we will explore the properties and uses of zinc hydroxide in detail.
Properties of Zinc Hydroxide
Zinc hydroxide is a basic compound with a pH value of around 9. It is a white, odorless, and tasteless powder that is insoluble in water. It has a molecular weight of 99.4 g/mol and a density of 3.05 g/cm³. The melting point of zinc hydroxide is around 125°C, and it decomposes at around 300°C.
Preparation of Zinc Hydroxide
Zinc hydroxide can be prepared by reacting zinc sulfate with sodium hydroxide. The reaction produces zinc hydroxide as a white precipitate. The chemical equation for the reaction is: ZnSO₄ + 2NaOH → Zn(OH)₂ + Na₂SO₄
Uses of Zinc Hydroxide
Zinc hydroxide has several industrial uses. It is used as a flame retardant in plastics and rubber products. It is also used as a pigment in paints, coatings, and inks. Zinc hydroxide is also used in the production of zinc oxide, which is used in the manufacture of rubber, ceramics, and other materials.
Health Hazards of Zinc Hydroxide
Zinc hydroxide is not considered to be toxic, but it can cause skin and eye irritation. It is important to handle it with care and to wear protective clothing and goggles when handling it.
In conclusion, zinc hydroxide is a versatile and important chemical compound that has various industrial applications. Its properties and uses make it an essential ingredient in many products. However, it is important to handle it with care and to follow safety guidelines to avoid any health hazards.