CAS number : 7446-08-4
Molecular weight :110.96
Molecular formula/chemical symbol :SeO2
Description :
Selenium dioxide is the chemical compound with the formula SeO2. This colorless solid is one of the most frequently encountered compounds of selenium.
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Selenium dioxide |
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Other names[hide]
Selenium(IV)
oxide |
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Identifiers |
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22440 |
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3283 |
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VS8575000 |
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Jmol-3D images |
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Properties |
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SeO2 |
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110.96 g/mol |
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Appearance |
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rotten radishes |
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3.954 g/cm3, solid |
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340 °C (sealed tube) |
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350 °C subl. |
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Solubility in water |
38.4 g/100
mL (20 °C) |
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soluble in benzene |
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6.7 g/100 mL (15 °C) |
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4.4 g/100 mL (15 °C) |
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1.11 g/100 mL (14 °C) |
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10.16 g/100 mL (12 °C) |
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1.65 kPa (70 °C) |
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Acidity (pKa) |
2.62; 8.32 |
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Refractive index (nD) |
> 1.76 |
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Structure |
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see text |
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trigonal (Se) |
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Hazards |
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EU Index |
034-002-00-8 |
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Toxic (T) |
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Non-flammable |
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Related compounds |
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Other anions |
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Other cations |
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Related compounds |
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USES :
For
manganese electrolysis additive beverage with trace elements additives, iron
and steel materials blackening agent
Can
be used as the oxidizer, catalyst, chemical reagent.
Report :
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Product name |
Selenium dioxide |
CAS：7446-08-4 |
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Description |
White lustrous tetragonal crystal |
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TEST ITEMS |
TEST RESULT( % ) |
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Analytical grade |
Chemically pure |
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SeO2 |
≥ 99.0 |
98.0 |
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Residue on ignition (as sulphate) |
≤ 0.05 |
0.2 |
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Cl |
≤ 0.003 |
0.005 |
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Sulfate and selenate |
≤ 0.05 |
0.1 |
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Fe |
≤ 0.001 |
0.002 |
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Heavy metals (as Pb) |
≤ 0.001 |
0.05 |
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Water Insoluble |
≤ 0.005 |
0.01 |
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