Selenium(IV) oxide, 99.4% (metals basis), Thermo Scientific Chemicals

Product Code	Brand	Quantity
11311739	Thermo Scientific Alfa Aesar 012358.22	100 g
11321739	Thermo Scientific Alfa Aesar 012358.36	500 g

Description

It is used in the manufacture of other selenium compounds. Selenium dioxide is an oxidizing agent mostly used in the allylic oxidation of alkenes to produce allylic alcohols. It is used in creating colorless glass and toner in photographic developing.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

• CAS: 7446-08-4
• Molecular Weight (g/mol): 110.97
• InChI Key: JPJALAQPGMAKDF-UHFFFAOYSA-N
• PubChem CID: 24007

• Molecular Formula: O2Se
• MDL Number: MFCD00003562
• Synonym: selenium oxide, selenium iv oxide, oxoselane oxide, selenious anhydride, selenium oxide seo2, seleniumdioxide, dimer, selenous acid anhydride, selenium iv dioxide 1:2, selenium oxide se2o4
• SMILES: O=[Se]=O

Specifications

• Melting Point: 340°C to 350° (sublimation)
• Color: White
• Assay Percent Range: 99.4% (Metals Basis)
• MDL Number: MFCD00003562
• Solubility Information: Partially soluble in water,methanol,ethanol,and acetone. Soluble in concentrated sulfuric acid.
• SMILES: O=[Se]=O
• Molecular Weight (g/mol): 110.97
• Formula Weight: 110.96
• Density: 3.95 g/cm³ at 20°C

• CAS: 7446-08-4
• Physical Form: Powder
• Molecular Formula: O2Se
• Synonym: selenium oxide, selenium iv oxide, oxoselane oxide, selenious anhydride, selenium oxide seo2, seleniumdioxide, dimer, selenous acid anhydride, selenium iv dioxide 1:2, selenium oxide se2o4
• InChI Key: JPJALAQPGMAKDF-UHFFFAOYSA-N
• IUPAC Name: selenium dioxide
• PubChem CID: 24007
• Odor: Odorless
• Chemical Name or Material: Selenium(IV) oxide

Safety and Handling

When using do not eat, drink or smoke. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). This material and/or its container must be disposed of as hazardous waste. Avoid release to the environment.

P201-P202-P261-P262-P264b-P270-P280-P285-P301+P310-P303+P361+P353-P304+P340-P305+P351+P338-P308+P313-P310-P330-P363-P501c

H301-H310+H330-H314-H341-H373

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Recommended Storage : Ambient temperatures

Product Identifier

• Selenium (IV) oxide

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 3
• LONG-TERM AQUATIC HAZARD Chronic 1
• ACUTE AQUATIC Acute 1
• Specific target organ toxicity after repeated exposure Category 2

Hazard Statement

• H301-Toxic if swallowed.
• H331-Toxic if inhaled.
• H373-May cause damage to organs.
• H400-Very toxic to aquatic life.
• H410-Very toxic to aquatic life with long lasting effects.

Precautionary Statement

• P260-Do not breathe dust/fume/gas/mist/vapours/spray.
• P273-Avoid release to the environment.
• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P301+P310-IF SWALLOWED: Immediately call a POISON CENTER/doctor /
• P301+P330+P331-IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310-Immediately call a POISON CENTER/doctor/.

Supplemental information

• MIXTURE LIST-Contains : Selenium dioxide

RUO – Research Use Only