| Formula / Notation | O2Se |
|---|---|
| CAS Number | 7446-08-4 |
| Molecular Weight | 110.97 |
| Melting Point | 340 °C under pressure |
| Boiling Point | 599 °F at 760 mmHg (sublimes) (USCG, 1999) |
| Density | 3.95 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | Soluble in concentrated sulfuric acid |
| Appearance | Selenium dioxide appears as a white or creamy-white volatile lustrous crystal or crystalline powder with a pungent sour smell. Melting point 340 deg C. Density 3.954 g / cm3. Toxic by ingestion and... |
| Also Known As | 7446-08-4; Selenious anhydride; Selenium oxide (SeO2); Selenium dioxide dimer; Selenous acid anhydride; Selenium(IV) dioxide (1:2); Selenium oxide (Se2O4); Selenium oxide (1:2); 9N3UK29E57; NSC-56753 |
| Category | Laboratory Reagents |
What is Selenium dioxide?
Selenium dioxide (O2Se) is a laboratory reagent that appears as Selenium dioxide appears as a white or creamy-white volatile lustrous crystal or crystalline powder with a pungent sour smell. Melting point 340 deg C. Density 3.954 g / cm3. Toxic by ingestion and.... It has a molecular weight of 110.97 g/mol. Boiling point: 599 °F at 760 mmHg (sublimes) (USCG, 1999). Melting point: 340 °C under pressure.
Formula & Notation
IUPAC Name: selenium dioxide
Other Names / Synonyms: 7446-08-4; Selenious anhydride; Selenium oxide (SeO2); Selenium dioxide dimer; Selenous acid anhydride; Selenium(IV) dioxide (1:2); Selenium oxide (Se2O4); Selenium oxide (1:2); 9N3UK29E57; NSC-56753
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 340 °C under pressure |
| Boiling Point | 599 °F at 760 mmHg (sublimes) (USCG, 1999) |
| Density | 3.95 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Molecular Weight | 110.97 |
| Solubility | Soluble in concentrated sulfuric acid |
| Appearance | Selenium dioxide appears as a white or creamy-white volatile lustrous crystal or crystalline powder with a pungent sour smell. Melting point 340 deg C. Density 3.954 g / cm3. Toxic by ingestion and... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Selenium dioxide (O2Se) is a laboratory reagent that appears as Selenium dioxide appears as a white or creamy-white volatile lustrous crystal or crystalline powder with a pungent sour smell. Melting point 340 deg C. Density 3.954 g / cm3. Toxic by ingestion and.... It has a molecular weight of 110.97 g/mol. Boiling point: 599 °F at 760 mmHg (sublimes) (USCG, 1999). Melting point: 340 °C under pressure.
Used as a synthetic reagent for transformations including oxidation, reduction, coupling, or functional group manipulation.
Hazardous reagent. May be toxic, corrosive, flammable, or reactive. Use in fume hood with full PPE. Consult SDS before use.
The formula or notation for Selenium dioxide is: O2Se