O2Se
110.97 g/mol
Industrial ChemicalDanger
SELENIUM DIOXIDE
CAS7446-08-4EC231-194-7
Category
Industrial Chemical
Compound Class
Inorganic Salt
Primary Use
Reagent and oxidizing agent
Selenium dioxide is an inorganic compound widely used as a reagent and oxidizing agent in chemical synthesis. It is industrially significant for manufacturing other selenium compounds and has applications in glassmaking and photographic processing.
Manufacture of other selenium compoundsReagent and oxidizing agentGlass manufacturing
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Sulfur dioxide
CAS7446-09-5
Industrial chemical for smelting and refining
ReferenceSame Category
Sulfur trioxide
CAS7446-11-9
Sulfonation agent and sulfuric acid intermediate
ReferenceSame Category
Zinc sulfate monohydrate
CAS7446-19-7
Electroplating and industrial processing
ReferenceSame Category
Zinc sulfate heptahydrate
CAS7446-20-0
zinc supplement and industrial chemical
Safety Reference
Danger
H301Toxic if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H331Toxic if inhaled
H373May cause damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H319Causes serious eye irritation
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H300Fatal if swallowed
H371May cause damage to organs
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for SELENIUM DIOXIDE (CAS 7446-08-4) is 2811.29.
HS code (international, 6-digit)
2811.29
EU CN code (8-digit)
2811 29 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
selenium dioxide
InChIKey
JPJALAQPGMAKDF-UHFFFAOYSA-N
SMILES
O=[Se]=O
Synonyms (25)
- Dioxide, Selenium
- Oxide, Selenium
- Oxoselane oxide
- SELENIUM DIOXIDE
- Selenious anhydride
- Selenium dioxide dimer
- Selenium dioxide, puriss.
- Selenium oxide
- Selenium oxide (Se2O4)
- Selenium oxide (SeO2)
- Selenium(IV) dioxide
- Selenium(IV) oxide
- Selenonyl
- Selenous acid anhydride
- biossido di selenio
- dioxido de selenio
- dioxyde de selenium
- seleninyl oxygen
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