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SELENIUM DIOXIDE

Catalog No. Selenium_dioxide Name Wikipedia.org
CAS Number 7446-08-4 Website http://www.wikipedia.org/
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SYNONYMS

IUPAC name
(oxo-λ6-selanylidene)oxidane
IUPAC Traditional name
(oxo-λ6-selanylidene)oxidane
Synonyms
Selenous anhydride
Selenium(IV) oxide

DATABASE IDS

Unique Ingredient Identifier 9N3UK29E57
PubChem CID 24007
Chemspider ID 22440
CAS Number 7446-08-4
Wikipedia Title Selenium_dioxide

PROPERTIES

pKa 2.62; 8.32
Apperance White, yellowish white, or red crystalline solid
Boiling Point 350 °C subl.
Density 3.954 g/cm3, solid
Flash Point Non-flammable
Melting Point 340 °C (sealed tube)
Odor rotten radishes
Refractive Index > 1.76
Solubility 38.4 g/100 mL (20 °C)
39.5 g/100 ml (25 °C)
82.5 g/100 mL (65 °C) in water
Solubility soluble in benzene
Solubility 6.7 g/100 mL (15 °C) in ethanol
Solubility 4.4 g/100 mL (15 °C) in acetone
Solubility 1.11 g/100 mL (14 °C) in acetic acid
Solubility 10.16 g/100 mL (12 °C) in methanol
Vapor Pressure 1.65 kPa (70 °C)
EU Index 034-002-00-8
European Hazard Symbols Toxic (T)
European Hazard Symbols Dangerous for the environment (N)
NFPA704
NFPA 704 diagram
0
3
0
Risk Statements R23/25, R33, R50/53
RTECS VS8575000
Safety Statements S1/2, S20/21, S28, S45, S60, S61
UN Number 3283

DETAILS

Description (English)

REFERENCES