Factory Supply best price CAS 7446-08-4 Selenium dioxide
Product Description
Selenium dioxide is and inorganic oxidizer; reacts, possibly violently, with reducing agents such as hydrides, nitrides, alkali metals, and sulfides. Contact with strong acids may cause release of toxic hydrogen selenide gas. Water solution is a medium-strong acid (selenious acid). Rapidly absorbs dry hydrogen fluoride, hydrogen bromide, hydrogen chloride, to form corresponding selenium oxohalides. Reacts with many substances producing toxic selenium vapors. Attacks many metals in presence of water.
It is soluble in water and hygroscopic and absorbs moisture or water from the air. Selenium oxide is incompatible with strong oxidising agents, reducing agents, strong acids, ammonia, organics, and phosphorus trichloride.
Product Properties
| Product Name: | Selenium dioxide |
| CAS: | 7446-08-4 |
| MF: | O2Se |
| MW: | 110.96 |
| EINECS: | 231-194-7 |
| Mol File: | 7446-08-4.mol |
| Selenium dioxide Chemical Properties |
| Melting point | 315 °C (subl.)(lit.) | ||||||||||||||
| Boiling point | 684.9 °C(lit.) | ||||||||||||||
| density | 4.81 g/mL at 25 °C(lit.) | ||||||||||||||
| vapor pressure | 1 mm Hg ( 157 °C) | ||||||||||||||
| refractive index | nD20 <1.76 | ||||||||||||||
| Fp | 315°C | ||||||||||||||
| storage temp. | Store below +30°C. | ||||||||||||||
| solubility | H2O: soluble | ||||||||||||||
| form | powder | ||||||||||||||
| color | white | ||||||||||||||
| Specific Gravity | 3.95 | ||||||||||||||
| PH | 2 (10g/l, H2O, 20℃) | ||||||||||||||
| Water Solubility | 38.4 g/100 mL (14 ºC) | ||||||||||||||
| Sublimation | 315 ºC | ||||||||||||||
| Merck | 14,8434 | ||||||||||||||
| crystal system | square | ||||||||||||||
| Space group | P42/mbc | ||||||||||||||
| Lattice constant |
|
||||||||||||||
| Exposure limits | ACGIH: TWA 0.2 mg/m3 NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 |
||||||||||||||
| Stability: | Stable. Incompatible with organic materials, strong acids, ammonia, nitric acid, halogen acids. Protect from moisture. |
Application
Selenium dioxide (SeO2) is used as an oxidizing agent, as a catalyst, and as an antioxidant for lubricating oils and grease.
Selenium dioxide (SeO2) is used in the manufacture of other selenium compounds. Selenium dioxide is an oxidizing agent mostly used in the allylic oxidation of alkenes to produce allylic alcohols. It is used in creating colorless glass and toner in photographic developing.
Transportation information
UN number: 3440
HazardClass : 6.1
PackingGroup : III
HS CODE: 28112990
