Diethyl ether of vitriol" ("oleum dulce vitrioli")—the name reflects the fact that it is obtained by distilling a mixture of ethanol and sulfuric acid (then known as oil of vitriol)—and noted some of its medicinal properties. At about the same time, Paracelsus discovered ether's analgesic properties in chickens. The name "ether" was given to the substance in 1729 by August Sigmund Frobenius. Diethyl ether Diethyl ether, or simply ether, is an organic compound in the ether class with the formula , sometimes abbreviated as (see Pseudoelement symbols). It is a colorless, highly volatile flammable liquid. It is commonly used as a solvent
Kusum oil Kusum oil Kusum oil is a type of oil extracted from the seed of the Kusum tree ("Schleichera oleosa"). The plant, which is also commonly known as Ceylon oak, lac tree, or Macassar oiltree, belongs to the Sapindaceae family. The schleichera family is named after J. C. Schleicher, a Swiss botanist, and the species name means "oily" or "rich in oil." The tree is native to India and Pakistan, but is also found in some parts of Southeast Asia. The bunches of fruit are plucked by climbing the "Schleichera oleosa" trees. The fruit pulp is removed by rubbing the fruits