Sale! View larger

Selenium Dioxide Powder | SeO2 | CAS 7446-08-4


New product

Selenium Dioxide is a selenium compound with the formula of SeO2. Heeger Materials can provide the best Selenium Dioxide (SeO2) Powder with a purity of 99.99% and 99.999% at a competitive price. The particle size can be tailored according to specific requirements.

More details


Please contact us if you need customized services. We will contact you with the price and availability in 24 hours.

Data sheet

Particle Size-100 mesh or costomized
Purity99.99%-99.999% (4N-5N)
ProductSelenium dioxide

More info

Selenium Dioxide (SeO2) Powder is used in the production of manganese, and the galvanic industry. Under normal pressure, it is heated to 317℃ for sublimation. Heeger Materials offers a selection of over 100 high-purity products, including metals, metal oxides, and metal salts, with 99.999% purity or higher.

Selenium Dioxide Powder | SeO2 | CAS 7446-08-4

  • Chemical formula: SeO2
  • Molar mass: 110.96 g/mol
  • Appearance: White crystals, turn slightly pink with trace decomposition
  • Odor:  rotten radishes
  • Density: 3.954 g/cm3, solid
  • Melting point: 315 °C 
  • Boiling point: 684.9 °C
  • Solubility in water: 38.4 g/100 mL (20 °C, 39.5 g/100 ml (25 °C), 82.5 g/100 mL (65 °C)
  • Solubility: soluble in benzene
  • Solubility in ethanol: 6.7 g/100 mL (15 °C)
  • Solubility in acetone: 4.4 g/100 mL (15 °C)
  • Solubility in acetic acid: 1.11 g/100 mL (14 °C)
  • Solubility in methanol: 10.16 g/100
  • Hazardous Class: Class 6.1
  • UN No.: UN3283
  • CAS: 7446-08-4


  • Used as a catalyst for the production of electrolytic manganese.
  • Used as a raw material for the production of selenium compounds (such as sodium selenite, sodium selenate, zinc selenate, barium selenate, and barium selenite), which are used as decolorizing agents, coloring agents, and feed additives for glass.
  • Used as an important reagent that can be used to oxidize the α-methylene carbon atoms to form allylic hydroxy derivatives.
  • Used as an agent for "bluing" steel, which forms a blue-grey sheen on the steel surface when heated to a certain temperature, which can protect the steel from rusting.

Shipping and Packing

Selenium Dioxide (SeO2) Powder is carefully packaged in carton boxes with foam protection to minimize damage during storage and transportation and to preserve the quality of our products in their original condition. The vacuum packing is 1kg/bag, 25kg/barrel, or based on specific requirements.

Selenium Dioxide (SeO2) Powder Packing

Inquiry to Heeger Materials

Items marked with an asterisk (*) are required.
Please include item quantity, size and purity.
Privacy Information:

Heeger Materials respects your privacy, and we will NOT sell or provide your personal data to other third parties, or allow them to use your personal data for their own purposes. However, we would like to send you information from time to time by mail or email about our products and special offers in addition to the interest categories you've selected above. Read our Privacy Policy

30 other products in the same category: