Selenous acid, 98%
Selenous acid, 98% (CAS 7783-00-8) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 25 g.
About Selenous acid, 98%
Selenous acid, 98% is part of the Zemixal main Group Metal & Metalloid Compounds (Al, Sn, Pb, Bi, Sb, Ga, In) range. For your records (Synthesis), the material is defined by CAS 7783-00-8, formula H2O3Se and molar mass 128.99 g/mol. Expect white to almost white to off-white powder or crystals.
Use cases we see most often
- Metallurgy & plating
- Materials research
Safe handling
Physical constants on file: melting point 70 °C and density 3.004 g/mL. Hazard communication follows GHS (Danger: H301+H331, H301, H331 and H373). Our SDS lists exposure controls and first-aid measures. For transport it ships as UN UN 3283.
Standard pack sizes are 25 g, 100 g, 500 g, 5 kg and 4 x 25 kg, and custom quantities are quoted on request. Every shipment includes a batch certificate of analysis and a 16-section SDS. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.
Specifications and identifiers
| Product name | Selenous acid, 98% |
|---|---|
| Catalogue number | ZX-014385 |
| CAS number | 7783-00-8 |
| IUPAC name | selenous acid |
| Molecular formula | H2O3Se |
| Molar mass | 128.99 g/mol |
| Exact mass | 129.9169 |
| Grade | Synthesis |
| Purity / assay | 98% |
| Physical form | Crystalline |
| Appearance | White to almost white to off-white powder or crystals |
| Melting point | 70 °C |
| Density | 3.004 g/mL |
| H-bond donors / acceptors | 2 / 3 |
| Topological polar surface area | 57.5 Ų |
| HS code | 28111990 |
| UN number | UN 3283 |
| InChIKey | MCAHWIHFGHIESP-UHFFFAOYSA-N |
| SMILES | O[Se](=O)O |
| PubChem CID | 1091 |
| Synonyms | Selenious acid, Monohydrated selenium dioxide, Selenium dioxide, monohydrated, selenige Saeure, dihydroxidooxidoselenium, Selenious acid (USP), Selenium (as selenious acid), (SeO(OH)2), [SeO(OH)2], Acid, Selenous, Acid, Selenious, Hydrogen Selenite |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H301+H331Toxic if swallowed or if inhaled
- H301Toxic if swallowed
- H331Toxic if inhaled
- H373May causes damage to organs through prolonged or repeated exposure
- H400Very toxic to aquatic life
- H410Very toxic to aquatic life with long lasting effects
Precautionary statements P260, P261, P264, P270, P271, P273, P301 + P316, P304 + P340, P316, P319, P321, P330, P391, P403 + P233, P405, P501
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 500 g | Quoted on request | |
| 5 kg | Quoted on request | |
| 4 x 25 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Selenous acid, 98%
Which CAS number identifies Selenous acid, 98%?
What are the formula and molar mass of Selenous acid, 98%?
What grade and pack sizes are available for Selenous acid, 98%?
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Other grades with CAS 7783-00-8
- CAS
- 112945-52-5
- Formula
- O2Si
- MW
- 60.08 g/mol
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