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Chromium(III) hydroxide
Chromium(III) hydroxide is a gelatinous green inorganic compound with the chemical formula Cr(OH)3. It is a polymer with an undefined structure and low solubility. It is amphoteric, dissolving in both strong alkalis and strong acids.
Chromium(III) hydroxide is prepared by treating an aqueous solution of hydrated chromium trichloride with ammonia.
It can also be prepared by treating an aqueous solution of chromium(III) nitrate with potassium hydroxide until the pH is within 7 to 8: The following idealized equation suffices:
It is used as a pigment, as a mordant, and as a catalyst for organic reactions.
Three chromium(III) oxide hydroxide (CrO(OH)) minerals are known: bracewellite, grimaldiite and guyanaite.
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Chromium(III) hydroxide
Chromium(III) hydroxide is a gelatinous green inorganic compound with the chemical formula Cr(OH)3. It is a polymer with an undefined structure and low solubility. It is amphoteric, dissolving in both strong alkalis and strong acids.
Chromium(III) hydroxide is prepared by treating an aqueous solution of hydrated chromium trichloride with ammonia.
It can also be prepared by treating an aqueous solution of chromium(III) nitrate with potassium hydroxide until the pH is within 7 to 8: The following idealized equation suffices:
It is used as a pigment, as a mordant, and as a catalyst for organic reactions.
Three chromium(III) oxide hydroxide (CrO(OH)) minerals are known: bracewellite, grimaldiite and guyanaite.