Colorless monoclinic or lobular crystals. The product is dissolved in 2.3 mL of cold ethanol and 1.5 mL of boiling ethanol 5mL chloroform, 3mL ether, 3mL acetone, 30mL carbon tetrachloride, 100mL benzene, 30mL carbon disulfide, 23mL turpentine. Soluble in hot water, slightly soluble in petroleum ether. Sublimation when heated to above 100 ℃. Danger of causing combustion.

Reagents for detecting manganese, mercury, nickel, magnesium, titanium, tungsten, uranium, nitrate, and nitrite. Used for the separation of trivalent and tetravalent ions (such as iron, aluminum, chromium, etc.).