TIN MOR′DANTS. Syn. Dyers’ spirit, Solution of tin, Spirit of t., Nitromuriate of t.† These, as noticed above, vary greatly in their composition and character.
Prep. 1. Take of aquafortis, 8 parts; sal ammoniac or common salt, 1 part; dissolve, and add, very gradually, of grain tin, 1 part; and, when dissolved, preserve it in stoppered bottles from the air. This is the common ‘SPIRIT OF TIN’ of the dyers.
2. (Berthollet.) Nitric acid, at 30° Baumé, 8 parts; sal ammoniac, 1 part; dissolve, then add by degrees, of tin, 1 part; and when dissolved, dilute the solution with 1-4th of its weight of water.
3. (Dambourney.) Hydrochloric acid, at 17° Baumé, 4 parts; nitric acid, at 30° Baumé, 1 part; mix, and add by degrees, of Molucca tin, 1 part.
4. (Hellot.) Nitric acid and water, of each 1 lb.; sal ammoniac, 1 oz.; nitre, 1⁄2 oz.; dissolve, then add, by degrees, of granulated tin, 2 oz.
5. (Poerner.) Nitric acid and water, of each 1 lb.; sal ammoniac, 11⁄2 oz.; dissolve, then add, by very slow degrees, of pure tin. beaten into ribands, 2 oz.
6. (Schoeffer.) Nitric acid and water, of each 2 lbs.; sal ammoniac, 2 oz.; pure tin, 41⁄2 oz.; as last. All the above are used chiefly for dyeing scarlet, more particularly with cochineal.
7. (LAC SPIRIT.) From grain tin, 1 lb, slowly dissolved in hydrochloric acid (sp. gr. 1·19), 20 lbs. Recommended as a solvent for lac dye. For use, 3⁄4 to 1 lb. of the liquid is digested on each lb. of the dye for 5 or 6 hours, before adding it to the dye bath.
8. Hydrochloric acid, 63⁄4 lbs.; aquafortis, 1⁄2 lb.; grain tin, gradually added, 1 lb. Recommended for lac dye.
TIN-PLATE. Iron-plate covered with a