Zinc Oxide is Used As A Coating Or in Topical Medicine

Zinc oxide, also known as zinc white, is a pure white powder composed of small amorphous or needle-like particles. As basic Chemical Raw Materials, it has a wide range of applications, such as rubber, electronics, medicine, coatings and other industries. Function and efficacy Zinc oxide can be used as a white pigment for printing and dyeing, paper making, matches and pharmaceutical industries. In the rubber industry used as natural rubber, synthetic rubber and latex vulcanized active agent, reinforcing agent and colorant. Also used in pigment zinc chrome yellow, zinc acetate, zinc carbonate, Zinc Chloride and other manufacturing. In addition, it is also used for electronic laser materials, phosphor, feed additives, catalysts and so on. It is used in medicine to make ointment, zinc paste, rubber paste and so on.

Humans learned to use zinc oxide long ago as a coating or topical medicine, but the history of human discovery of zinc oxide has been difficult to trace. A drug later identified as zinc oxide was recorded in the ancient Indian medical treatise Chakkara Ben to treat eye diseases and injuries. In the 1st century AD, the Greek physician Dioscorides also mentioned the use of zinc oxide as an ointment. Avisenaar's Hui Hui Prescriptions, completed in 1025, described zinc oxide as the drug of choice for treating various skin ailments, including skin cancer. Zinc oxide is no longer used to treat skin cancer, but it is still widely used to treat other common skin conditions. The Romans learned to make brass by reacting copper with zinc ore containing zinc oxide as early as 200 BC. In the shaft furnace, zinc oxide turns into zinc vapor and rolls into the flue to react. Dioscorides also talks about this. From the 12th century,

Indians became aware of zinc and zinc mines and began to smelt zinc in primitive ways. Zinc smelting technology was introduced to China in the 17th century. In 1743, the first zinc smelting plant in Europe was established in Bristol, England. The other main use of zinc oxide is as a coating, called zinc white. In 1834, zinc white was first used as a watercolor pigment, but zinc white is insoluble in oil. But the problem was soon solved by a new zinc oxide production process. In 1845, Leclerc began mass-producing zinc-white oil paints in Paris, and by 1850, zinc-white was popular throughout Europe. The purity of zinc white was so great that at the end of the 19th century, some artists covered their paintings with zinc white as a base color, only to see them crack a hundred years later. In the second half of the 20th century, zinc oxide was used in the rubber industry. In the 1970s, the second largest use of zinc oxide was as a copy paper additive, but in the 21st century zinc oxide as an additive has been phased out.