CompTox Dashboard (EPA)
|Molar mass||67.996 g/mol|
|Melting point||300 °C (572 °F; 573 K) (decomposes)|
|Fm3m, No. 225|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Chromium(II) oxide (CrO) is an inorganic compound composed of chromium and oxygen. It is a black powder that crystallises in the rock salt structure. Hypophosphites may reduce chromium(III) oxide to chromium(II) oxide:
- H3PO2 + 2 Cr2O3 → 4 CrO + H3PO4
It is readily oxidized by the atmosphere. Chromium (II) oxide is basic, while CrO
3 is acidic, and Cr
3 is amphoteric.
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