How to identify potassium sulfate? Practical identification methods you can learn
How to identify potassium sulfate? Please explain the identification methods. The identification methods for potassium sulfate can refer to the following: First, look at the appearance. Potassium sulfate is in crystalline form. Second, look at the color. Potassium sulfate is generally white, and some is grayish-yellow, grayish-green or light brown. Third, observe hygroscopicity. Potassium sulfate is basically non-hygroscopic...
How to identify potassium sulfate? Please explain the identification methods
The identification methods for potassium sulfate can refer to the following:
First, look at the appearance. Potassium sulfate is in crystalline form.
Second, look at the color. Potassium sulfate is generally white, and some is grayish-yellow, grayish-green or light brown.
Third, observe hygroscopicity. Potassium sulfate is basically non-hygroscopic; even when air humidity exceeds 70%, potassium sulfate still keeps its original shape (this is the main point of distinction between potassium chloride and potassium sulfate).
Fourth, observe the water dissolution situation. Use the method introduced in the urea section to observe the solubility of potassium sulfate. Potassium sulfate can dissolve, but it dissolves more slowly than potassium chloride, and the amount dissolved is also smaller than that of potassium chloride (this is one point of distinction between potassium chloride and potassium sulfate).
Fifth, the color of the flame. Use the method introduced in the potassium chloride section to observe the flame color of potassium sulfate, and it is found that potassium sulfate gives the purple flame characteristic of potassium ions when burned.
Sixth, measure the pH of the solution. Insert wide-range pH test paper into the aqueous solution from (4). The potassium sulfate liquid of superior-grade and first-grade products is acidic, and the paper strip turns red; the potassium sulfate solution of qualified products is alkaline, and the paper strip turns blue (this is one of the methods for distinguishing potassium chloride from potassium sulfate).
Click to get more nitrogen, phosphorus and potassium application techniques
Click to get more chemical fertilizer application techniques