The disodium salt of selenious acid. It is used therapeutically to supply the trace element selenium and is prepared by the reaction of SELENIUM DIOXIDE with SODIUM HYDROXIDE.
Acute toxic
Environmental hazard
⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).
The disodium salt of selenious acid. It is used therapeutically to supply the trace element selenium and is prepared by the reaction of SELENIUM DIOXIDE with SODIUM HYDROXIDE.
| Physical Description | Sodium selenite appears as a white colored crystalline solid. Soluble in water and more dense than water. Contact may irritate skin, eyes and mucous membranes. Toxic by ingestion, inhalation and sk… |
| Color/Form | Tetragonal prisms |
| Melting Point | 1310 °F (decomposes) (NTP, 1992) |
| Boiling Point | Decomposes (NTP, 1992) |
| Density | 3.1 (NTP, 1992) - Denser than water; will sink |
| Solubility | greater than or equal to 100 mg/mL at 70.7 °F (NTP, 1992) |
| Vapor Pressure | less than 0.001 mmHg at 68 °F (NTP, 1992) |
| Stability/Shelf Life | Stable in air |
| IUPAC Name | disodium;selenite |
| Molecular Formula | Na2O3Se |
| Molecular Weight | 172.95 g/mol |
| CAS | 10102-18-8 |
| SMILES | [O-][Se](=O)[O-].[Na+].[Na+] |
| InChIKey | BVTBRVFYZUCAKH-UHFFFAOYSA-L |
| Catalog No | KC.1910271 |
| Pack sizes | 100GM |
⚠️ For information only; not a substitute for the official SDS.