Three bottles of sulfuric acid, acetone and a "white substance labeled potassium nitrate" can be seen in one of the documents, which also mention a "burner with white residue," a thermometer ...

The term refers to compounds including potassium sulfate, potassium-magnesium sulfate, potassium nitrate, potassium carbonate, potassium oxide, and potassium chloride. Among these, potassium ...