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.
Oxalic Acid
This consists of washed out. The oxalate of soda is convertof carbonate of soda, all traces of potassa are colorless crystals, possessing considerable vol- ed, by heated milk of lime, into oxalate of atility, and a strong, sour taste; when ex- lime, and the resulting oxalate of lime is posed to a very dry atmosphere they effloresce treated with sulphuric acid, leaving a soluslightly. Oxalic acid sublimes at 180° Fahr., tion of oxalic acid ready to be evaporated into and melts at 280°; is soluble in about nine crystals . Two pounds of sawdust yield 1 times its weight of cold, and in its own weight pound oxalic acid. of boiling water; soluble also, but in a less degree, in alcohol. It has a strong affinity Chemically pure oxalic acid is best prepared