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Sodium selenite

Sodium selenite
CAS number 10102-18-8
PubChem 24934
SMILES [O-][Se](=O)[O-].[Na+].[Na+]
Molecular formula Na2O3Se
Molar mass 172.938
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Sodium selenite is a chemical compound with the formula Na2SeO3. This salt is a source of selenium in many food supplements.

Sodium selenite is listed in the material safety data sheets from U.S. Environmental Health and Safety as a dangerous poison in large amounts. Its toxicity is similar to that for arsenic. It attacks sulfhydryl enzymes.

Although selenium is poisonous, it should be noted that selenium is an essential element, albeit in small amounts. Animals require selenium for selenium-dependent enzymes (selenoproteins) such as glutathione peroxidase.[1].

Sodium selenite can be found as a listed ingredient in various foods such as dog biscuits and multivitamins.


  1. ^ Linus Pauling Institute at Oregon State University

See also

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sodium_selenite". A list of authors is available in Wikipedia.
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