our potassium sulfate: 

1.***0 ton per month. 

2.colorless crystals.

 

physical property : 

Colorless trapezius or six-party crystals or powder, but industrial more tan-white. Bitter in taste and salty. Density 2.**2 g/centimeters 3. Melting point, °C ***9 boiling point ***9 * C, soluble in water soluble in ethanol, acetone and carbon disulfide. It in water solubility of ammonium sulfate and potassium chloride because of the existence of decreased, while in fact insoluble in after two compounds of saturated solution.