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Choline Hydroxide

Choline hydroxide is one of the class of phase transfer catalysts that are used to carry the hydroxide ion into organic systems, and, therefore, is considered a strong base. It is the least-costly phase transfer catalyst, and is used as a cheap method of stripping photoresists in circuit boards. Choline hydroxide is not completely stable, and it slowly breaks down into trimethylamine.

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Chromic Chloride

Chromic chloride is used as the precursor to many inorganic compounds of chromium. It has also been used as a Lewis acid in organic reactions.

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Chromium was discovered by Louis Nicolas Vauquelin in the mineral crocoite in 1797. It was regarded with great interest because of its high corrosion resistance and hardness. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding chromium to form stainless steel. This application, along with chrome plating are currently the highest-volume uses of the metal. Chromium(III) salts are used in the tanning of leather. The high heat resistivity and high melting point makes chromite and chromium(III) oxide a material for high temperature refractory applications, like blast furnaces, cement kilns, molds for the firing of bricks and as foundry sands for the casting of metals. In these applications, the refractory materials are made from mixtures of chromite and magnesite. The use is declining because of the environmental regulations due to the possibility of the formation of chromium(VI).

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Chromium Nitrate

Chromium Nitrate is produced by the reaction of nitric acid with a chromium salt. Chromium Nitrate has a wide range of uses in metal treatment and plating, catalysts and as a cross linking agent in adhesive manufacture,used in manufacture of glass, for ceramic underglaze, corrosion inhibitor and mordant in printing.

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Chromium Potassium Sulfate

Chromium potassium sulfate is used in textile dye, photography, ceramics, and for the preparation of chromium standard solutions.

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