Uses:

In the gravimetric estimation of nickel, cobalt and cadmium; in the refining of rare metals; as an antioxidant in soldering flux for light metals; as a reducing agent in the analysis of minerals and slags; in separating Polonium from Tellurium; in tests for blood; for destroying fungi and molds; in the preparation of hydrazine hydrate. Pressure stabilizer in cutting oils. ABCD