raudaIIIoksüdiidist

raudaIIIoksüdiidist is the Estonian name for iron(III) oxide, also known as ferric oxide. It is a chemical compound with the formula Fe2O3. This compound is a major component of rust, the reddish-brown material that forms on iron or steel when exposed to moisture and oxygen. Iron(III) oxide is a solid at room temperature and is insoluble in water. It occurs naturally in many minerals, including hematite, which is the most important ore of iron. Hematite is a significant source of iron for industrial purposes. The compound is black or reddish-brown in its pure form, but impurities can give it a wide range of colors. In addition to its presence in rust and as an iron ore, iron(III) oxide has various applications. It is used as a pigment in paints, ceramics, and cosmetics due to its color and stability. It is also employed as a polishing agent and in magnetic recording media. The compound is generally considered non-toxic, although prolonged exposure to fine dust can be a respiratory irritant. In biological systems, iron is essential for life, and iron(III) oxide plays a role in iron metabolism, though it is not directly bioavailable in this form.