Chromium(III) chloride
Chromium(III) chloride (also known as chromic chloride) is an inorganic compound with the formula CrCl3. It is a high melting white solid used mainly for electroplating chromium onto other metals.
Properties[edit | edit source]
Chromium(III) chloride is a hygroscopic compound, meaning it readily absorbs moisture from the air. It is also deliquescent, meaning it can dissolve in the moisture it absorbs. When dissolved in water, chromium(III) chloride forms a green solution.
Structure[edit | edit source]
Chromium(III) chloride crystallizes with a cubic structure. This structure is similar to that of sodium chloride, with each chromium(III) ion surrounded by six chloride ions, and each chloride ion surrounded by six chromium(III) ions.
Preparation[edit | edit source]
Chromium(III) chloride can be prepared by direct combination of chromium and chlorine at high temperatures, or by reduction of chromium(VI) chloride with hydrogen.
Uses[edit | edit source]
Chromium(III) chloride is used in the electroplating industry for the production of protective coatings on other metals. It is also used as a catalyst in various chemical reactions.
Safety[edit | edit source]
Chromium(III) chloride is considered to be of low toxicity. However, it can cause irritation to the eyes, skin, and respiratory tract. It is also harmful if swallowed.
See also[edit | edit source]
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