seltiin

Selitins are a class of chemical compounds that are characterized by the presence of a selenite anion. The selenite anion has the chemical formula SeO3^2-. Selitins are often found as salts, where the selenite anion is combined with a cation. For example, sodium selenite (Na2SeO3) is a common selitin.

These compounds can be formed through various chemical reactions. One method involves the oxidation of elemental selenium in the presence of an alkali. Another approach is the reaction of selenous acid (H2SeO3) with bases. Selenous acid itself is typically produced by dissolving selenium dioxide (SeO2) in water.

Selitins exhibit a range of properties depending on the specific cation they are paired with. Many selitins are soluble in water, forming alkaline solutions due to the hydrolysis of the selenite anion. They can act as oxidizing or reducing agents in chemical reactions, though they are generally considered to be moderate in strength.

In terms of occurrence, selitins are found in nature, often in mineral deposits. They are also synthesized for various industrial and laboratory applications. Their uses can include roles in glass manufacturing, as analytical reagents, and in some specialized chemical processes. It is important to note that selenium compounds, including selitins, can be toxic if ingested in significant amounts, and appropriate handling precautions are necessary. The biological role of selenium is complex, with both essential and toxic levels known.