With dilute alkalis phosphites are slowly formed, but with concentrated solutions the decomposition follows the same course as with hot water.
The metallic phosphites are stable both dry and in solution; when strongly heated they evolve hydrogen and yield a pyrophosphate, or, especially with the heavy metals, they give hydrogen and a mixture of phosphide and pyrophosphate.
Guaiacol carbonate is known as duotal, the phosphate as phosphatol, the phosphite as guaiaco-phosphal; phosphotal is a mixture of the phosphites of creosote phenols.
There he made analyses of phosphates and phosphites, arsenates and arsenites, confirming the conclusions of J.
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