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.
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The Wothlytype Process
I. To Prepare the Uranic Salt.
Dissolve the ordinary commercial nitrate of uranium in distilled water; add ammonia till no more precipitate is formed. This precipitate is uranate of ammonia, insoluble in water. Wash in several waters, and then redissolve in nitric acid. The solution, crystallized and dried over a water-bath, constitutes the "uranammonium nitrium" of the specification, and is probably a double salt of uranium and ammonia. If it be very acid, dissclve For a stereoscopic size, measure out 1 dr. of in distilled water and again crystallize. II. The Sensitizing Liquor.