Description

MF:**3.*2

Traits:
White heavy amorphous powder or single square crystallization. Without odor. Tasteless.  In ***0 ℃ above   four party crystals, in ***0 ℃ above formed cubic crystals. Soluble in 2 copies of sulfuric acid and a mixture of water, soluble in acid and nitric acid, slow soluble in hydrofluoric acid, almost insoluble in water. The relative density is 5.*5. Melting point ：***0 ℃. Boiling point： ***0 ℃. Refractive index of 2.2. Stimulating.
Storage:
Seal preservation.
Use:
Used in manufacture incandescent gas chimney, enamel, white glass, refractory crucible and so on. X-ray photography. Grinding materials. And together with y  as the infrared spectrometerthe lamp light source.