Home
 Adhesives
 Beverages
 Confectionary
 Candles
 Chewing Gums
 Cosmetics
 Lacquer Formulations
 Detergents
 Disinfectants
 Dyes
 Fertilizers
 Fluorescent Liquids
 Fruit Preserving
 Fumigants
 Gold
 Hair Preparations
 Inks
 Insect Bites
 Insecticides
 Insulations
 Perfumes
 Soaps
 Polishes
 Shoe Dressings

To Dissolve Copper from Gold Articles

Take 2 ounces of proto-sulphate of iron and dissolve it in ½ a pint of water, then add to it in powder 2 ounces of
nitrate of potash; boil the mix are for some time, and afterwards pour it into a shallow vessel to cool and crystallize;
then to every part of the (crystallized) salt add 8 ounces of muiatic acid, and preserve in a bottle for use. Equal
parts, of the above preparation and of boiling water is a good proportion to use in dissolving copper, or 1 part by
weight of nitric acid may be used to 4 parts by weight of boiling water as a substitute.