CAS number : 7783-08-6
Molecular weight :144.9734
Molecular formula/chemical symbol :H2SeO4
Description :
Selenic acid is the chemical compound with the formula H2SeO4. It is an oxoacid of selenium, and its structure is more accurately described as (HO)2SeO2.
As predicted by VSEPR theory, the selenium center is tetrahedral, with a Se–O bond length of 161 pm. In the solid state, it crystallizes in an orthorhombic structure.
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Selenic acid |
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Selenic(VI) acid |
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Other names[hide] Selenic acid |
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Identifiers |
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1058 |
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C05697 |
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VS6575000 |
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Jmol-3D images |
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Properties |
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H2SeO4 |
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144.9734 g/mol |
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Appearance |
Colorless deliquescent crystals |
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2.95 g/cm3, solid |
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58 °C (331 K) |
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260 °C (533 K) (decomposes) |
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Solubility in water |
130 g/100 mL (30 °C) |
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Acidity (pKa) |
similar to H2SO4 |
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Refractive index (nD) |
1.5174 (D-line, 20 °C) |
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Structure |
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tetrahedral at Se |
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Hazards |
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23/25-33-50/53 |
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20/21-28-45-60-61 |
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Main hazards |
Corrosive, highly toxic |
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Related compounds |
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Other anions |
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Other cations |
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Related compounds |
Sulfuric
acid |
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