Appearance: colorless or white hexagonal or rhombic crystal or granular powder.
Taste: bitter and salty.
Melting point (℃): 400 (-H2O)
Relative density (water = 1): 2.9500
Flash Point: 1689 ° C
Solubility: 110 g / L (20 ℃), soluble in water, soluble in ethanol, acetone, carbon disulfide.
Flame reaction: purple (through blue cobalt glass)
Crystal structure: orthorhombic metathesis reactions: Can form soluble barium salt solution is reacted with barium sulfate precipitation.
Role and purpose
Is the manufacture of various potassium salts such as potassium carbonate, potassium persulfate, and other basic materials. Glass industry as Simcheong agent. Dye industry as intermediates. Perfume industry as additives. The pharmaceutical industry also used as a laxative and so on. Potassium sulfate is commonly used in agriculture potash, potassium about 50% in Taiwan, commonly known as “white Gary.” In addition, potassium sulfate is also used in the glass industry, dyes, perfumes, pharmaceuticals and the like.