[ product properties ] this product is six FangJing series or amorphous olive green powder, a metallic luster. Specific gravity of 5.21, melting point 2266 + 25 ℃ 4000 ℃, the boiling point. Insoluble in water, soluble in acid and alkali metal in the heat of the salt solution. Light, atmosphere, high temperature and corrosive gas (SO2, H2S) very stable, has high cover force with magnetic