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stannous chloride

noun

, Chemistry.
  1. a white, crystalline, water-soluble solid, SnCl 2 ⋅2H 2 O, used chiefly as a reducing and tinning agent, and as a mordant in dyeing with cochineal.


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Word History and Origins

Origin of stannous chloride1

First recorded in 1865–70
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Example Sentences

Gum arabic is not precipitated from solution by alum, stannous chloride, sulphate or nitrate of copper, or neutral lead acetate; with basic lead acetate it forms a white jelly, with ferric chloride it yields a stiff clear gelatinoid mass, and its solutions are also precipitated by borax.

In Norwood and Rogers’s process a thin coating of tin is applied to the iron before it is dipped in the zinc, by putting the plates between layers of granulated tin in a wooden tank containing a dilute solution of stannous chloride, when tin is deposited on them by galvanic action.

For still brighter colours, notably yellow and red, stannous chloride was at one time largely employed, now it is used less frequently; and the same may be said of copper and ferrous sulphate, which were used for dark colours.

The colour is developed gradually as the temperature rises; it may be rendered brighter by the addition of stannous chloride.

It is prepared from nitrobenzene by reducing it with stannous chloride and sodium hydroxide.

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