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Selenium dioxide CAS 7446-8-4

Chemical name: Selenium dioxide

Synonymous names:Selenious acid anhydride;SELENIOUS ANHYDRIDE;SELENIUM AA/ICP CALIBRATION/CHECK STANDARD

CAS No:7446-8-4

Molecular formula:O2Se

Molecular weight:110.96

EINECS No:231-194-7

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Structural formula：

Product Description：

Items	Specifications
Appearance	White powder
Assay,%	99.0MIN
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)

Properties and Usage:

Selenium dioxide (SeO₂), CAS 7446-8-4, is a colorless to white solid compound with strong oxidizing properties.

1. High-efficiency oxidant for organic synthesis

As a strong oxidant, selenium dioxide is used to oxidize compounds such as aromatic hydrocarbons and alcohols, and as a catalyst in the synthesis of selenium compounds.

2. Photoelectric and semiconductor materials

Selenium dioxide is a key raw material for photoelectric materials such as cadmium selenide, and is used in the production of solar cells and photodetectors.

3. High-performance glass manufacturing

Used as an additive for optical glass to improve refractive index and transparency, suitable for optical and special glass production.

4. Electrolytic metal and chemical applications

As a core intermediate in the manufacture of electrolytic manganese and selenide, it helps the development of the chemical industry.

Storage conditions: Store below +30°C.

Packing: This product is packed in 25kg cardboard drums, and it can also be customized according to customers' requirements