Product Details
Product Description of Selenium Dioxide
Selenium dioxide is primarily used as an oxidizing agent in organic synthesis and participates in a wide range of oxidation reactions. Although the use of selenium dioxide in some applications has gradually decreased due to its toxicity and the development of alternative reagents, it remains an important tool in synthetic chemistry.
In particular, selenium dioxide continues to play a significant role in the oxidation of reactive methyl, methylene, and hydroxymethyl groups, making it valuable for functional group transformations and the synthesis of organic compounds.
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 | 148434 |
| 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. |
| CAS DataBase Reference | 7446-08-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Selenium dioxide(7446-08-4) |
| EPA Substance Registry System | Selenium dioxide (7446-08-4) |
Safety Information
| Hazard Codes | T,N,Xn |
| Risk Statements | 36/38-50/53-33-23/25-51/53-20/22 |
| Safety Statements | 26-61-60-45-28A-20/21-28 |
| RIDADR | UN 3440 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | VS8575000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 2811 29 90 |
| HazardClass | 6.1 |
| PackingGroup | II |
| Hazardous Substances Data | 7446-08-4(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 68.1 mg/kg |
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