Word Study
stannous
CIDE DICTIONARY
stannous, a.
Pertaining to, or containing, tin; specifically, designating those compounds in which the element has a lower valence as contrasted with stannic compounds. [1913 Webster]
Stannous chloride (Chem.), a white crystalline substance, SnCl2.(H2O)2 , obtained by dissolving tin in hydrochloric acid. It is used as a mordant in dyeing.
OXFORD DICTIONARY
stannous, adj. Chem. of or relating to bivalent tin (stannous salts; stannous chloride).
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