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10854 Selenium(IV) oxide, Puratronic®, 99.999% (metals basis)

CAS Number
Selenium dioxide

Stock No. Size Price ($) Quantity Availability
10854-06 5g 64.00
10854-14 25g 232.00
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Selenium(IV) oxide, Puratronic®, 99.999% (metals basis)


Chemical Properties

Formula Weight
Melting point
340-350° subl.
Storage & Sensitivity
Ambient temperatures.
Soluble in water, benzene, ethanol and methanol. Sprangly soluble in acetone and acetic acid.


In organic reactions, selenium dioxide is often used as an oxidizing reagent employed for carrying out allylic oxidations, Riley oxidation, synthesis of diones, etc. It is used to impart a red color to glass. It finds use as a toner in photographic developing, and an active ingredient in some cold-blueing solutions.


It is an acidic oxide, and forms selenous acid on dissolution in water.

Literature References

Rabjohn, N. Selenium Dioxide Oxidation. Organic Reactions 2011, 24 (4), 261-416.

Hamigeran, B.; Trost, B. M.; Pissot-Soldermann, C.; Chen, I.; Schroeder, G. M. An Asymmetric Synthesis of Hamigeran B via a Pd Asymmetric Allylic Alkylation for Enantiodiscrimination. J. Am. Chem. Soc. 2004, 126 (14), 4480.

Brzaszcz, M.; Kloc, K.; Maposah, M.; Mlochowski, J. Selenium(IV) Oxide Catalyzed Oxidation of Aldehydes to Carboxylic Acids with Hydrogen Peroxide. Syn. Commun. 2000, 30 (24), 4425-4434.

GHS Hazard and Precautionary Statements

Hazard Statements: H301-H310+H330-H314-H341-H373

Toxic if swallowed. Fatal in contact with skin. Fatal if inhaled. Causes severe skin burns and eye damage. Suspected of causing genetic defects. May cause damage to organs through prolonged or repeated exposure.

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

Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Do not get in eyes, on skin, or on clothing. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Wear protective gloves/protective clothing/eye protection/face protection. In case of inadequate ventilation wear respiratory protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or concerned: Get medical advice/attention. Rinse mouth. Wash contaminated clothing before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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