Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 581
Pickling Brass To Look Like Gold.
Оглавление—To pickle brass so as to make it resemble gold allow a mixture of 6 parts of chemically pure nitric acid and 1 part of English sulphuric acid to act for some hours upon the surface of the brass; then wash with a warm solution, 20 parts of tartar in 50 parts of water, and rub off neatly with dry sawdust. Then coat the article with the proper varnish.
