Important: Safety Warning
This page contains a formula or preparation using substances now known to be dangerously toxic, such as arsenic, mercury, lead, or cyanide compounds. Exposure to these substances can cause severe poisoning, permanent injury, or death.
In addition, this page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
Home › Aniline Colors › Indelible Printing Ink
Indelible Printing Ink
Mix 1 the same way as common water-color cakes pound varnish (such as is used for ordinary or Indian ink. In winter this should be done printing ink), 1 pound black sulphuret of near a fire, or the saucer should be placed over mercury, 1 ounce nitrate of silver, 1 ounce a basin containing a little warm water. It sulphate of iron, 2 table-spoonfuls lampblack. may then be used with either a steel pen or a Thoroughly grind together, adding enough camel's-hair pencil. turpentine to reduce to the requisite consistency.