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CHROMIUM(II) CHLORIDE 10049-05-5

Chromium chloride, chemical formula CrCl3. Molecular weight 158.36. Dark green crystalline powder. Easy to dissolve in water, soluble in ethanol, insoluble in ether. Boil with water for a long time to form a green solution. Heating decomposition. When heated in the air, it turns into chromium trioxide. Sublimation can occur in chlorine gas flow, and co heating with carbon tetrachloride at 400 ℃ can yield kinetically inert purple anhydrous material. There are three variants of hexahydrate: dark green, light green, and purple. They all turn into a mixture of dark green and purple in aqueous solution, but appear dark green in organic solvents such as DMSO, DMF, and ethanol.
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  • 10049-05-5

CHROMIUM(II) CHLORIDE Basic information





Physical Properties Uses Preparation






Product Name: CHROMIUM(II) CHLORIDE





CAS: 10049-05-5





MF: Cl2Cr





MW: 122.9





EINECS: 233-163-3





Mol File: 10049-05-5.mol





CHROMIUM(II) CHLORIDE Chemical Properties





Melting point 824 °C(lit.)
Boiling point 1120°C (estimate)
density 2.9 g/mL at 25 °C(lit.)
storage temp. Store below +30°C.
solubility soluble in H2O
form powder
color Off-white to green-gray
Specific Gravity 2.878
Water Solubility Soluble in water. Insoluble in alcohol and ether.
Sensitive Air & Moisture Sensitive
Crystal Structure CaCl2 type
crystal system Nogata
Merck 142,244
Space group Pnnm
Lattice constant a/nm b/nm c/nm α/o β/o γ/o V/nm3
0.598 0.664 0.348 90 90 90 0.1382
Exposure limits NIOSH: IDLH 250 mg/m3; TWA 0.5 mg/m3
Stability: Stable, but decomposes in water or moist air. Incompatible with water, oxidizing agents, active metals.
CAS DataBase Reference 10049-05-5(CAS DataBase Reference)
EPA Substance Registry System Chromium(II) chloride (10049-05-5)

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