A7274612
Selenic acid solution , 40%inH2O , 7783-08-6
CAS NO.：7783-08-6
Empirical Formula: H2O4Se
Molecular Weight: 144.97
MDL number: MFCD00012191
EINECS: 231-979-4
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 58°C |
| Boiling point: | 260°C |
| Density | 1.407 g/mL at 25 °C |
| refractive index | n20/D 1.5174(lit.) |
| Flash point: | >230 °F |
| solubility | Miscible with sulfuric acid. Immiscible with ammonia. |
| form | Liquid |
| pka | 4.19±0.10(Predicted) |
| color | Colorless |
| PH | 2.74(1 mM solution);1.83(10 mM solution);0.97(100 mM solution) |
| Water Solubility | g/100g H2O: 426 (0°C), 567 (20°C), 1328 (30°C) [LAN05]; decomposed by alcohol [HAW93] |
| Merck | 14,8429 |
| Exposure limits | ACGIH: TWA 0.2 mg/m3 NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 |
| Stability: | Stable, but decomposes on heating. Non-flammable. Incompatible with metals, combustible materials. Hygroscopic. |
| CAS DataBase Reference | 7783-08-6(CAS DataBase Reference) |
| EPA Substance Registry System | Selenic acid (7783-08-6) |
Description and Uses
Selenic acid is used as an oxidizing agent. Its derivative sodium selenate is used in the preparation of glass and animal feeds. It acts as an analytical reagent and also used for the preparation of other selenium salts such as gold(III) selenate. Further, it reacts with fluorosulfuric acid to get selenoyl fluoride.
Safety
| Symbol(GHS) |     GHS05,GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301+H331-H315-H318-H373-H410 |
| Precautionary statements | P273-P280-P301+P310+P330-P304+P340+P311-P305+P351+P338+P310-P314 |
| Hazard Codes | T,N |
| Risk Statements | 23/24/25-34-50/53-33-23/25-41-38 |
| Safety Statements | 23-26-36/37/39-45-61-60-28-20/21-16 |
| RIDADR | UN 3264 8/PG 1 |
| WGK Germany | 2 |
| RTECS | VS6575000 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | I |
| HS Code | 2811198090 |
| Hazardous Substances Data | 7783-08-6(Hazardous Substances Data) |
