Potassium sulfate is a salt of sulfate ions and potassium ions, usually under the conditions of colorless or white crystals, particles or powder. No smell, bitter taste. Hard. Chemical nature is not active. Stable in the air. Density of 2.66g / cm3. The temperature of 1069 ° C. The aqueous solution was neutral and the pH was about 7.1 g in 8.3 ml of water, 4 ml of boiling water, 75 ml of glycerol and insoluble in ethanol at room temperature.
The main use of serum protein biochemical tests, Kjeldahl nitrogen catalyst, Potassium Sulphate the preparation of other potassium, fertilizer, drugs, preparation of glass, alum and so on.
The role of potassium sulfate and its use
It is a basic raw material for making various potassium salts such as potassium carbonate and potassium persulfate. The glass industry is used as a cleaning agent. The dye industry is used as an intermediate. Spices industry as auxiliaries and so on. The pharmaceutical industry is also used as laxatives. Potassium sulfate in agriculture is commonly used potash, potassium oxide content of 50%, commonly known as "white Gary" in Taiwan. In addition, potassium sulfate in the industry is also used for glass, dyes, spices, medicine and so on.
Potassium sulfate is a colorless crystal, hygroscopicity is small, easy to agglomerate, good physical properties, easy to use, is a good water-soluble potassium fertilizer. Potassium sulfate is also a chemical neutral, physiological acid fertilizer. Potassium sulfate is an indispensable important fertilizer for chlorine-free, high-quality and efficient potash, especially in tobacco, grape, beet, tea, potato, flax and various fruit trees. , Phosphorus, potassium ternary compound fertilizer main raw material.
Potassium sulfate type compound fertilizer is produced by low temperature conversion of potassium chloride, chemical synthesis and shotcrete granulation process. The stability of the potassium sulfate compound fertilizer is better than that of N, P and K, , Mg, Zn, Fe, Cu and other trace elements. Potassium Sulphate This fertilizer is suitable for a variety of cash crops, especially avoid chlorine crops. The main components of potassium sulfate-type compound fertilizer are MAP (ammonium phosphate) DAP (diammonium phosphate), ammonium sulfate (mainly low temperature conversion of sulfuric acid and gas ammonia derived from). Potassium sulfate, urea and other other there are some small amounts of impurities such as calcium sulfate, phosphoric acid iron, aluminum, Potassium Sulphate magnesium and other salts and trace unreacted completely potassium chloride.
Precautions for use
First, in the acidic soil, the excess sulfate will increase the acidity of the soil, and even exacerbate the soil of active aluminum, iron on the crop of poison. In the flooding conditions, too much sulfate will be reduced to generate hydrogen sulfide, so that the root damage black. Therefore, long-term use of potassium sulfate with farm manure, alkaline phosphate and lime with the reduction of acidity, Potassium Sulphate in practice should also be combined with drainage measures to improve ventilation.
Second, in calcareous soils, sulfate and calcium ions in the soil produce insoluble calcium sulphate (gypsum). Too much calcium sulfate will cause soil compaction, this time should pay attention to increase farm manure.
Third, the use of boiled vegetables on the focus, such as tobacco, tea, grapes, sugar cane, beets, watermelon, potato and other potassium sulfate not only increase production, but also improve quality. Potassium sulfate price than potassium chloride expensive, less supply, Potassium Sulphate should focus on the use of chlorine sensitive and hi hi potassium on the economic crops, the benefits will be better.
Fourth, this fertilizer is a physiological acidic salt, applied in alkaline soil can reduce soil pH.
Potash, can provide crop resistance, so that crop stem grow strong, to prevent lodging, to promote flowering and strong, enhance drought, cold, resistance to pests and diseases. Can promote the crop to make better use of nitrogen, increase the protein content. And can promote the formation of sugar and starch. So that walnuts, seeds, fruits and tubers, lumps increase, shape and color appearance. Improve the oil content of oil crops. Increase the content of vitamin C in the fruit. Accelerate the maturity of fruits, vegetables and other crops, so that the maturity of convergence. Increase the product anti-bruise and natural decay ability to extend the storage and transportation period. Increase cotton and linen crop fiber strength and fineness, color purity. Potassium sulfate is a quick potash fertilizer.