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Cobaltine
(Co"balt*ine Co"balt*ite) n. (Min.) A mineral of a nearly silver-white color, composed of arsenic,
sulphur, and cobalt.
Cobaltous
(Co*balt"ous) a. (Chem.) Pertaining to, derived from, or containing, cobalt; — said esp. of
cobalt compounds in which the metal has its lower valence.
Cobaltous chloride, a crystalline compound, CoCl2, of a pale rose color when hydrous, blue when
dehydrated. Its solution is used for a sympathetic ink, the writing being nearly colorless when dried in
the air, owing to absorbed moisture, and becoming bright blue when warmed.
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