Appearance:
Colorless or light yellow or crystalline powder, see light color dark.
Melting point 218 ~ 220 ℃ (anhydrous matter), sublimation, slightly soluble in water, easily soluble in ethanol, benzene and ether.
Content ≥ 99.0%
Moisture ≤ 0.5%
Application:
Widely used in pharmaceutical intermediates, photographic copy paper, photographic drugs and other aspects