Insoluble in H2O and organic solvents. Insoluble in diluted nitric acid and hydrochloric acid. Slightly soluble in hydriodic acid and hot concentrated nitric acid. Soluble in ammonia and methyl acetate.
form
Powder
color
Black
Specific Gravity
6.003
Water Solubility
Soluble in ammonia, methyl acetate and potassium iodide. Slightly soluble in hydriodic acid and concentrated nitric acid. Insoluble in water, ethanol, diluted nitric acid, hydrochloric acid and diethyl ether.