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What is the color of cobalt salt?

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Cobalt is typically in one of two ionization states. Cobalt(I) salts are usually pink. Cobalt(II) salts are usually blue. read more

Cobalt(I) salts are usually pink. Cobalt(II) salts are usually blue. Cobalt(II) chloride is interesting because the anhydrous solid is blue, but the hydrate is pink, making it useful as a moisture/humidity indicator. read more

Cobalt blue is a blue pigment made by sintering cobalt oxide with alumina at 1200 °C. Chemically, cobalt blue pigment is cobalt oxide-aluminium oxide, or cobalt aluminate, CoAl2O4. Cobalt blue is lighter and less intense than the pigment Prussian blue. It is extremely stable and has historically been used as a coloring agent in ceramics, jewelry, and paint. Transparent glasses are tinted with the silica-based cobalt pigment smalt. read more

Cobalt Iodized Salt A fine-screened bag and block salt with cobalt and iodine that helps cattle, sheep, and goats synthesize vitamin B12 and plays a role in thermoregulation, intermediary metabolism, and reproductive growth and development. read more

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Cobalt Iodized Salt
championschoicesalt.com

Color of Anhydrous Transition Metal Salt
chemistry.stackexchange.com

Salt, Which Color Is Right?
digitalcommons.usu.edu