Important: Safety Warning
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.
In addition, this page recommends preserving food with chemicals such as salicylic acid, borax, or formaldehyde. These substances are toxic when eaten, and their use in food is now prohibited.
This information has been left in for historical purposes but should not be acted upon.
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Phenyl Paper
This article would be useful for packing meat and other substances liable to decay. (See No. 1614.) It can be prepared by fusing 5 parts stearic acid at a gentle heat, mixing well with 2 parts carbolic acid and 5 parts melted paraffine, and stirring until the whole has become solid, and applying it to paper in the same manner as waxed paper is made. (See No. 1938.) 1937. Solvent for Silk, Paper, &c.
The ammonio-oxide of copper is a solvent for silk, paper, and the cellular tissue of plants.
If its action be limited to a few moments it converts the surfaces into a gelatinous mass.