Osmic Acid

Osmic acid, also known as Osmium tetroxide, is a compound of osmium with oxygen. It is a colorless substance with a pungent odor, soluble in water and organic solvents.

Osmic acid is a strong oxidizing agent and is used in laboratories as a reagent. It also finds use in medicine as a contrast agent, and is also used in histology for staining tissue.

Osmic acid has toxic properties, causing irritation to the skin, eyes and respiratory tract. When working with it, appropriate precautions are required. Overall, it is an important chemical compound widely used in science and medicine.



Osmic acid, also known as Osmic acid (English: Osmium tetroxide), is one of the rarest and most expensive chemical compounds on earth. This is a yellow substance, which is the oxide of the most expensive metal - osmium (Os). Due to its enormous cost and rarity, osmic acid is used in very small quantities and