chromic chloride

noun

a violet, crystalline compound, CrCl 3 , occurring in both water-soluble and water-insoluble forms, or a green or violet, water-soluble deliquescent compound, CrCl 3 ⋅6H 2 O: used chiefly as a mordant, in chrome-steel plating, and in the synthesis of chromium salts.

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Chromous chloride, CrCl2, is prepared by reducing chromic chloride in hydrogen; it forms white silky needles, which dissolve in water giving a deep blue solution, which rapidly absorbs oxygen, forming basic chromic salts, and acts as a very strong reducing agent.

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Solutions of chromic chloride in presence of excess of acid are green in colour.

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By passing ammonia over heated chromic chloride, the nitride, CrN, is formed as a brownish powder.

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A green precipitate, perhaps CrPO4�3H2O, is obtained on adding an excess of sodium phosphate to chromic chloride solution.

From

chromic acid chromic fluoride

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