Ammonium Cupric Chloride
Title: Ammonium Cupric Chloride
CAS Registry Number: 15610-76-1
CAS Name: Ammonium tetrachlorocuprate(II)
Additional Names: ammonium chlorocuprate; cupric ammonium chloride
Molecular Formula: Cl4CuH8N2
Molecular Weight: 241.43
Percent Composition: Cl 58.74%, Cu 26.32%, H 3.34%, N 11.60%
Line Formula: (NH4)2CuCl4
Literature References: Prepd by evaporation of a 2:1 soln of NH4Cl and CuCl2: Chrobak, Bull. Int. Acad. Polonaise 1929A, 361; C.A. 24, 36887 (1930); Willet, J. Chem. Phys. 41, 2243 (1964).
Properties: Yellow, hygroscopic, orthorhombic crystals. Sol in water. Keep well closed.
Derivative Type: Dihydrate
Additional Names: Ammonium tetrachlorodiaquocuprate(II)
Properties: Blue to bluish-green tetragonal, rhombododecahedral crystals. d 2.0. Becomes anhydr at 110-120°; decomposes on stronger heating. Sol in water, alcohol, liquid NH3; the aq soln is acid to litmus.
Density: d 2.0
Use: Analytical reagent; formerly for determining carbon in iron and steel.

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