Potassium Nitrate is colorless crystal or white powder. It is easily soluble in water, and the liquid ammonia but insoluble in anhydrous alcohol. It can not deliquesce in the air. As strong oxidizer, it will burn and explode when mixing with organics.

Uses:
It is mainly applied in TV glass, glass refining agent and motor light glass; compound
fertilizer and foliar spray fertilizer; fireworks and  black powder; drugs and catalyzer;
ceramic and enamel; salt both of heat treatment, cigarette paper, concentrating agent;
as chromogen agent, preserving agent in food industry.