Product Description: Character: Hexagonal crystal or amorphous olive-green powder with metallic luster. Specific gravity: 5.21 Melting point: 2266± 25º C Boiling point: 4000º C Insoluble in water or acid. Soluble in hot metallic alkaline bromate solution. Extremely stable against light, air, high temperature & corrosive gases (SO2, H2S). High covering power, magnetic properties. Packing: Reinforced woven bag with plastic inner. Net weight: 25 or 40 kg.