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 2.66 g / cm3. The temperature of 1069 ° C. Potassium Sulphate 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, the preparation of other potassium, fertilizer, drugs, preparation of glass, alum and so on.
The role of potassium sulfate and its use
Is the manufacture of various potassium salts such as potassium carbonate, potassium sulfate and other basic raw materials. The glass industry is used as a cleaning agent. Potassium Sulphate The dye industry is used as an intermediate. Spice industry as auxiliaries and so on. The pharmaceutical industry is also used as a laxative. Potassium sulfate in agriculture is commonly used potash, potassium oxide content of 50%, commonly known as "white plus" 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, Potassium Sulphate high quality and efficient potash, especially in tobacco, grapes, beets, tea trees, potatoes, 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, shotcrete granulation process, good stability, in addition to the necessary plants N, P, K three major nutrients, but also contains S, Ca , 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 surplus sulfuric acid and gas ammonia obtained). Potassium sulfate, Potassium Sulphate urea and other other there are some small amounts of impurities such as calcium sulfate, phosphoric acid iron, aluminum, 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, Potassium Sulphate long-term use of potassium sulfate with farm manure, alkaline phosphate and lime with the reduction of acidity, 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 chlorine crops, such as tobacco, tea, grapes, sugar cane, beet, watermelon, potato and other potassium sulfate not only increase production, but also improve the quality. Potassium sulfate price is more expensive than potassium chloride, less supply, Potassium Sulphate should focus on the use of chlorine sensitive and hi sulfur potassium on the economic crops, the benefits will be better.
Fourth, this fertilizer is a physiological acidic salt, Potassium Sulphate applied in alkaline soil can reduce soil pH.