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Encyclopedia Britannica - Main :: LUP-MAL |
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M3C = manganese , iron ; M2C = molybdenum ; M3C2= chromium ; MC = zirconium ; M4C3 = beryllium
aluminium ; M2C3 = uranium; MC2 = barium, calcium , strontium, lithium, thorium, &c.; M C4 = chromium.The principal
union at a high temperature, e.g. lithium, iron , chromium, tungsten, &c.; (2) by the reduction of oxides with carbon at high temperatures, e.g. calcium , barium, strontium, manganese , chromium, &c.; (3) by the reduction of carbonates with magnesium in the presence of carbon, e.g. calcium, lithium; (4) by the action of metals on acetylene or metallic derivatives of acetylene, e.g., sodium, potassium. The metallic carbides are crystalline solids, the greater number being decomposed by water into a metallic hydrate and a hydro-carbon; sometimes hydrogen is also evolved. Calcium carbide
carbide
aluminium and beryllium
separate
article
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