Sodium Selenite is an inorganic compound that appears as a colorless solid in its pentahydrate form, Na₂SeO₃·5H₂O occurring as the most usual water-soluble variant. It is synthesized by reacting selenium dioxide with sodium hydroxide, forming a pyramidal SeO₃²⁻ anion. Both the anhydrous and pentahydrate forms of sodium selenite feature this pyramidal structure with Se-O bond distances ranging from 1.67 to 1.72 Å.
CAS No.: 10102-18-8
Synonyms: Disodium selenite; Selenious acid disodium salt; Natriumselenit; Sodium biselenite; Selenite, sodium; Pleo selene; Sodium selenite anhydrous; Disodium selenium trioxide.
| Physical Properties | |
| Chemical formula | Na2SeO3 |
| IUPAC Name | disodium;selenite |
| Molecular weight | 172.95 g/mol |
| Density | 3.1 g/cm³ |
| Solubility | Water, methanol & ethanol |
| Chemical Properties | |
| Color | White to Off-white |
| State | Solid Crystalline Powder |
| Melting point | 710 °C |
| λmax | 205.1 nm |
| pKa | 1.2 |
| LogP | -1.3 |
| Pictograms : |   |
| Hazard Statements : | H300 + H330: Fatal if swallowed or if inhaled. |
| Precautionary statements : | P260: Do not breathe dust. P273: Avoid release to the environment. P280: Wear protective gloves/ eye protection/ face protection. P302 + P352: IF ON SKIN: Wash with plenty of water. P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/ doctor. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present, and easy to do. Continue rinsing. |
Sodium Selenite is an inorganic compound that appears as a colorless solid in its pentahydrate form, Na₂SeO₃·5H₂O occurring as the most usual water-soluble variant. It is synthesized by reacting selenium dioxide with sodium hydroxide, forming a pyramidal SeO₃²⁻ anion. Both the anhydrous and pentahydrate forms of sodium selenite feature this pyramidal structure with Se-O bond distances ranging from 1.67 to 1.72 Å.
CAS No.: 10102-18-8
Synonyms: Disodium selenite; Selenious acid disodium salt; Natriumselenit; Sodium biselenite; Selenite, sodium; Pleo selene; Sodium selenite anhydrous; Disodium selenium trioxide.
| Physical Properties | |
| Chemical formula | Na2SeO3 |
| IUPAC Name | disodium;selenite |
| Molecular weight | 172.95 g/mol |
| Density | 3.1 g/cm³ |
| Solubility | Water, methanol & ethanol |
| Chemical Properties | |
| Color | White to Off-white |
| State | Solid Crystalline Powder |
| Melting point | 710 °C |
| λmax | 205.1 nm |
| pKa | 1.2 |
| LogP | -1.3 |
| Pictograms : | |
| Hazard Statements : | H300 + H330: Fatal if swallowed or if inhaled. |
| Precautionary statements : | P260: Do not breathe dust. P273: Avoid release to the environment. P280: Wear protective gloves/ eye protection/ face protection. P302 + P352: IF ON SKIN: Wash with plenty of water. P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/ doctor. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present, and easy to do. Continue rinsing. |
Sodium selenite is used as a supplement to provide selenium in animal feeds and dietary supplements. It is utilized in the manufacturing of colorless glass and other applications involving selenium chemistry.
Selenium is a trace mineral essential for health, while sodium selenite is a compound that contains selenium. Sodium selenite is a form of selenium used in supplements and animal feeds.
Sodium selenite is employed in veterinary medicine as a supplement to prevent selenium deficiency in animals. It helps support proper growth, immune function, and reproduction in livestock and pets.
Sodium selenite is synthetic. It is an inorganic compound typically produced through chemical processes involving selenium and sodium hydroxide.
Sodium selenite provides essential selenium, supporting antioxidant activity, thyroid function, and immune health. It’s used in supplements to direct selenium deficiency in humans and animals.
