Hafnyl chloride

Compounds Hafnium chloride (HfCU) hafnyl chloride (HfOCU) hafnium dioxide (Hf02)... 

Hafnium salts are mild irritants of the eye and the skin and have produced liver damage in animals. In mice, the LDso of hafnyl chloride by intraperitoneal injection was 112 mg/kg. In cats, intravenous administration of hafnyl chloride at lOmg/kg was fatal. Rats fed a diet containing 1% for 12 weeks showed slight changes in the liver, consisting of perinuclear vacuolization of the parenchymal cells and coarse granularity of the cytoplasm. The application of 1 mg of hafnium chloride to the eyes of rabbits produced transient irritation. Topical application of hafiiium chloride crystals to unabraded rabbit skin produced transient edema and erythema application to abraded skin caused ulceration. ... 

Tetrachloride, HfCl4, white cry<>t mass, obtained by heat -ing the oxide in the presence of chlorine and a reducing agent. Hydrolyzed to hafnyl chloride, HfOCli by water. Volatilizes appreciably at 250. ... 

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