Calamine CAS 8011-96-9 is a carbonate mineral, calcite group smithsonite, mainly containing zinc carbonate. After excavation, wash, sun dry, and remove any debris. This product is characterized by a block like aggregate, with an irregular block shape, grayish white or light red. The surface is powdery, matte, uneven, porous, and resembling a honeycomb. Lightweight and fragile. No odor, slightly astringent taste. Indications: detoxifying, brightening the eyes, removing cloudy spots, reducing dampness, relieving itching, and astringing sores. Used for redness, swelling and pain of the eyes, redness and rotting of the eye margins, pterygium of the iris, non converging ulcers, dripping pus, wet sores, and itching of the skin.

Chinese name: calamine

Foreign name: calamine; Lapis calaminaris calamina; Lapis calaminaris

Nickname: Ganshi, Luganshi

Appearance: circular or oblate

Color: White, light red, or yellow brown

Property: Lightweight, loose in weight, large in size

CAS number: 8011-96-9

Molecular formula: ZnCO3

Molecular weight: 241.0776

Chemical composition

The main component is zinc carbonate (Zn2O3), with a small amount of calcium oxide (CaO) of 0.27%, magnesium oxide (MgO) of 0.45%, iron oxide (Fe2O3) of 0.58%, and manganese oxide (MnO) of 0.01%. Zinc is often replaced by a small amount of iron (divalent). Some still contain small amounts of cobalt, copper, cadmium, lead, and trace amounts of germanium and indium. The calamine from Qingdao and Jinan contains small amounts of impurities such as iron, aluminum, calcium, magnesium, and extremely trace amounts of sodium.

Effect

It is a natural zinc carbonate that is insoluble in water and widely used in dermatology as a moderate preservative, astringent, and protective agent for treating skin inflammation or surface trauma. It is generally used as a 5% to 10% water suspension (lotion) or as an ointment. External use can inhibit the growth of local Staphylococcus. Can partially absorb wound secretions, with astringent and protective effects; It can still inhibit the growth of local Staphylococcus. Some people believe that this product has an inhibitory effect on Staphylococcus.

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