Sensitive to moisture, air-sensitive, hygroscopic, odorless solid gray
2.88 g · cm -3
824 ° C
Soluble in water
1870 mg · kg -1 ( LD50, rat, oral)
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Chromium (II ) chloride is a chemical compound from the group of chromium compounds and chlorides.
Production and representation
Chromium (II ) chloride is obtained by the reduction of chromium ( III) chloride with hydrogen at 500 ° C:
On a smaller extent, lithium aluminum hydride LiAlH4 or the like may be used to reduce
The reduction by zinc is possible.
Chromium (II ) chloride is a moisture- sensitive, air-sensitive, hygroscopic, gray odorless solid. It has an orthorhombic crystal structure of rutile type Pnnm similar to that of calcium chloride with a = 664, b = 598 and c = 348 pm.
Chromium (II ) chloride is used as a catalyst, reducing agent, and oxygen absorbent. It is also used in the Nozaki - Hiyama -Kishi reaction.