Name: Selenium Dioxide

Other name: Selenium Dioxide (IV)

Chemical formula: SeO₂

Molecular weight: 110.9588

CAS Registry Number: 7446-08-4

EINECS accession number: 231-194-7

Melting point: 340～350℃

Water solubility: easily soluble in water

Dense degree: 3.95 g/cm3 (15°C)

External view: white shiny needle-like crystals

use

1. It is used to make high-purity selenium and other selenium compounds, and is also an oxidant and catalyst for organic synthetic drugs

2. Used as a special reagent for plant alkaloids, and can also be used to precipitate zirconium, hafnium and prepare selenium compounds

3. Used as organic compound oxidant, catalyst, chemical reagent, and raw material for the production of various inorganic selenium compounds. It is also used in copiers, rectifiers, etc.

4. Manufacture other selenium compounds, alkaloid test, oxidant. It reacts with ammonia to produce nitrogen and selenium, and in alcoholic solution it produces ethyl ammonium selenite [NH₄(C₂H5)SeO₃], which produces nitrogen and black amorphous selenium with hydrazine, and produces nitrogen and red-brown amorphous selenium with hydroxylamine hydrochloride. With nitric acid to generate selenite.