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ChemicalBook CAS DataBase List Chromium
7440-47-3

Chromium synthesis

2synthesis methods
Chromium metal is prepared by reducing the ore in a blast furnace with carbon (coke) or silicon to form an alloy of chromium and iron called ferrochrome, which is used as the starting material for the many iron-containing alloys that employ chromium. Chromium to be used in iron-free alloys is obtained by reduction or electrolysis of chromium compounds.Chromiumisdif?culttoworkinthepuremetalform; it is brittle at low temperatures, and its high melting point makes it dif?cult to cast.
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Yield:7440-47-3 94.2%

Reaction Conditions:

with potassium chloride;sodium chloridebyproducts: MgCl2; 12 kg CrCl3, 3.5 kg Mg, 17.6 kg KCl and 12.4 kg NaCl mixed then heated in electric furnace at 800°C; formed MgCl2 dissolved and filtrated, remainder washed with water twice then with dild. HNO3;

References:

[Gmelin Handbuch der Anorganischen Chemie,Gmelin Handbook: Cr: MVol.A1, 5.2, page 228 - 229] I. G. Farbenindustrie A.-G. DE589987, 1933, C [C.,1934,vol. I,p. 3650][C.,1934,vol. I,p. 3650]

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