WHAT IS ZINC CARBONATE
Zinc Carbonate is an inorganic compound. It is a white crystalline powder that is not soluble in water and occurs naturally as granular or earthy masses. In pure form, it is a colorless compound. It has its other names as zinc monocarbonate and zinc salt. it is a hazardous solid, poses a threat to the environment.
Its structure is a rhombic crystalline structure. It is an odorless salt. It is not flammable. When heated, decomposition occurs and it emits toxic fumes of carbon monoxide and when it is hot it turns to yellow color, white when it is cool. It has a refractive index of 1.818, 1.618. It sinks in water. It is brittle solid at ordinary temperatures. It is malleable from 100°C to 150 °C. It is a fair conductor of electricity. It burns in the air producing white clouds of the oxide. It is also soluble in dilute acids and alkalis. It is harmful if inhaled or ingested. In case of contact, Zinc Carbonate irritates. It also reacts with acids vigorously. As with other carbonates, zinc carbonate is dissolved in acidic solutions as it is a base. Thus, the reaction yields carbon dioxide. This product is decomposed thermally and forms zinc oxide. High exposure of this salt affects human liver.
It has some applications listed below;
- It is used mainly in ointments and takes the place of the former impure carbonate.
- It serves as an astringent and absorbent.
- Zinc Carbonate with a small quantity of iron oxide, termed Calamine, is a very oil treatment for pruritus.
- It is used in cosmetics, lotions as well as personal care products.
- It is used as a fire-proofing filler for plastics and rubber.
- It is utilized in the manufacture of some zinc salts.
- It works as an antiseptic.
- It functions as pigment and feeds additives.
It is prepared by a reaction of any zinc salt like zinc sulfate and sodium carbonate.
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