Appearance: White amorphous powder ; Odourless white solid in various forms
H2Se – Hydrogen selenide
Other names: Hydroselenic acid, Selane, Selenium hydrideSelenium dihydride, [SeH2], H2Se
Appearance: Colorless gas ; Colourless compressed liquefied gas with characteristic odour ; Colorless gas with an odor resembling decayed horseradish. [Note: Shipped as a liquefied compressed gas.]