Selenium, Elemental

CAS RN:7782-49-2

Reactivities / Incompatibilities

Selenium + Silver bromate: The reaction is violently explosive.
Freshly reduced selenium (from selenium dioxide) reacts vigorusly with nitric acid. Trace of organic matter probably influlenced the reaction.
Reacts violently with chromium trioxide.
Can react violently with ... chromic oxide (CrO3), ... lithium silicon (Li6Si2), ... nitric acid, ... nitrogen trichloride, oxygen, ... potassium bromate, ... silver bromate. ...
Selenium burns in air with a bright blue flame and emits a horshradish like odor.
Selenium unites directly with flourine in the cold, giving off fumes, and finally the selenium ignites.
Bromine pentafluoride reacts readily in the cold with selenium; ignition usually occurs.
A mixture of potassium and selenium ignites; sodium does likewise and is attended by vivid incandescense. Rubidium carbide burns in selenium vapor.
A mixture of barium carbide & selenium heated to 150 deg C becomes incandescent. Calcium carbide & selenium vapor react with incandescence. A mixture of selenium & any chlorates but the alkali chlorates become incandescent.
Strontium carbide mixed with selenium and heated to 500 deg C becomes incandescent.
Lithium silicide attacks selenium with incandescence.
Chlorine trifluoride reacts vigorously with selenium, producing flames.
Lithium carbide burns in vapor of selenium.
Uranium reacts with incandescence with hot selenium.
The reaction between zinc and selenium is accompanied by incandescence.
When powdered nickel is heated with selenium, the elements unite with incandescence.
Selenium vapor attacks heated thorium carbide with incandescence.
Selenium + Potassium bromate: The reaction is violently explosive.
Burning selenium in oxygen has resulted in explosion, probably due to the presence of organic matter. Silver bromate + Selenium: The reaction is violently explosive.
Nitrogen trichloride explodes on contact with selenium.
Acids, strong oxidizers, chromium trioxide, potassium bromate, cadmium.
Do not use metal and acid to reduce selenium compounds. This will produce toxic gaseous hydrogen selenide.
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