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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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C
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Chromium
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1992-09-03
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A chemical element, symbol Cr, atomic number
24, relative atomic mass 52.01. It is a
bluish-white metal capable of taking a high
polish, and with a high melting-point. It is
used decoratively and, alloyed with nickel,
for electrical heating wires. Resistant to
abrasion and corrosion, it is used to harden
steel, and is a constituent of stainless
steel and many other useful alloys. It is
used extensively in chromium plating and as a
catalyst. Compounds include sodium and
potassium chromates and dichromates (for
tanning leather), and potassium and ammonium
chrome alums. It occurs chiefly as
chrome-iron ore. The USSR, Zimbabwe, and
Brazil are sources.