Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 576
Tombac Color On Brass.
Оглавление—This is produced by immersion in a mixture of copper carbonate, 10 parts; caustic soda, 30 parts; water, 200 parts. This layer will only endure wiping with a cloth, not vigorous scouring with sand.
