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.
This information has been left in for historical purposes but should not be acted upon.
Home › Miscellaneous Chemicals › Protoxide of Tin
Protoxide of Tin
Usually termed oxide of tin. Precipitate a solution of protochloride of tin with carbonate of potassa, wash and dry the powder at a heat under 166° Fahr., with as little exposure to the air as possible. It is a white or greyishwhite powder, soluble in acids and in the pure fixed alkalies. If it be heated in an atmograins nitric acid, and evaporate to dryness. sphere of carbonic acid it loses its water and Dissolve the mass in 5 fluid ounces water, add changes to a dense black powder, which is 60 grains chalk, and let the mixture stand for anhydrous protoxide. (Cooley.) 24 hours; then filter, and evaporate to dry-4120. Sesquioxide of Tin. A grey, ness. Lastly, fuse the dry mass, pour it out slimy precipitate, soluble in muriatic acid, on a flat stone, and, when it has congealed, and in ammonia, obtained by mixing fresh, break the mass in pieces and keep in a well- moist hydrated peroxide of iron with a solustoppered bottle. (U. S. Disp.).