Weaver, E. Eugene Product Development Group, Ford Motor Company, Dearborn, Michigan.
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Mercury(I) chloride, Hg2Cl2, a covalent compound which is insoluble in water. The substance sublimes when heated. The formula weight is 472.086 and the specific gravity is 7.16 at 20°C (68°F). The material is a white, impalpable powder consisting of fine tetragonal crystals. Calomel is manufactured by precipitation when sodium chloride is added to a solution of mercury(I) nitrate or by direct combination of the elements.
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