Description
| 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 |
| 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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