It is cubic crystal system or amorphous powder, olive green,
which has metallic luster. its gravity is 5.*1, melting point is
2,**6±*5ºC and boiling point is 4,**0ºC. It can not dissolve in
water and acidic solution, but it can dissolve in the solution of
alkali metallic bromate. It is very stable to light, atmosphere,
high temperature and corrosive gas (SO2, H2S etc.) It has high
covering power and magnetism.
