| CAS ID | 7783-00-8 |
|---|---|
| IUPAC Name | selenous acid |
| Molecular Formula | H2O3Se |
| Molecular Weight | |
| SMILES | O[Se](=O)O |
| CAS ID | 7783-00-8 |
|---|---|
| IUPAC Name | selenous acid |
| Molecular Formula | H2O3Se |
| Molecular Weight | |
| SMILES | O[Se](=O)O |
| 1091 |
Synonym: selenious acid, selenious acid h2seo3, monohydrated selenium dioxide, unii-f6a27p4q4r, selenium dioxide, monohydrated, ccris 5530, selenious acid usp, selenious acid,selenous acid,monohydrated selenium dioxide, selenium, reference standard solution
| Assay Percent Range | 97.5% min. (Iodometry) |
| Fieser | 01,992 |
| Merck Index | 15,8567 |
| Solubility Information | Solubility in water: 167g/100mL (20°C). Other solubilities: very soluble in hot water and alcohol,insoluble in ammonia |
| Formula Weight | 128.97 |
| Physical Form | Crystalline Powder, Crystals and/or Chunks |
| Packaging | Glass bottle |
| Solubility | Solubility in water: 167 g/100mL (20°C). Other solubilities: very soluble in hot water and alcohol, insoluble in ammonia |
| Color | Pink or White |
| Melting Point | 70.0°C |
| Chemical Name or Material | Selenious acid |
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Selenious acid is chemically represented as H₂SeO₃. This molecule is essential in industrial and laboratory settings due to its composition of two hydrogen atoms, one selenium atom, and three oxygen atoms.
The dibasic acid selenic acid (H₂SeO₄) is a more powerful oxidizing agent than the weaker selenious acid (H₂SeO₃). The oxidation states of selenium are the main differentiator between selenious acid and selenic acid, which are +4 and +6, respectively.
Electroplating uses selenium layers deposited by selenious acid, chemical synthesis uses it as a reagent, and the glass industry uses it to decolourize. Some medicinal and culinary uses also make use of it in minute quantities.
Be cautious when using selenium acid because it is poisonous and caustic. It is crucial to wear protective gear, ensure enough ventilation, and follow all safety protocols to prevent long-term health risks.
Its dibasic character and capacity to dissociate into two hydrogen ions are highlighted by the formula H₂SeO₃. Because of its quality, it is found to be used as an intermediary in the synthesis of selenium compounds and redox processes.
