Cobalt nitrate can refer to:
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Cobalt(II) nitrate
Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, pro ...
and its several hydrates
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Cobalt(III) nitrate, a diamagnetic volatile compound
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