Potassium sulfate is a salt composed of sulfate ions and potassium ions, usually colorless or white crystals, granules or powders. No smell, bitter taste. Rigid. The chemical property is not lively. Stable in the air. Density 2.66g/cm3. Melting Point 1069 ℃. Aqueous solution is neutral, Potassium Sulphate ph is about 7 at ambient temperature. 1g soluble in 8.3ML water, 4ml boiling, 75ml glycerin, insoluble in ethanol.
The main use of serum protein biochemical testing, Kjeldahl nitrogen catalysts, preparation of other potassium, fertilizer, drugs, glass, alum and so on.
The function and use of potassium sulfate
is to manufacture all kinds of potash, such as potassium carbonate, potassium persulfate and other basic raw materials. The glass industry is used as a settling agent. Potassium Sulphate The dye industry is used as an intermediate. Spices industry as auxiliaries. The pharmaceutical industry is also used as a laxative agent. Potassium sulfate is commonly used in agriculture, potassium oxide content 50%, in Taiwan commonly known as "Baigari." In addition, potassium sulfate is also used in the industry for glass, dyes, spices, pharmaceuticals, etc.
Application in Agriculture
Potassium sulfate is a colorless crystal, small hygroscopicity, not easily caking, good physical properties, convenient application, is a good water-soluble potash. Potassium Sulphate Potassium sulfate is also a chemical neutral, physiological acidic fertilizer. Potassium sulfate is a kind of chlorine-free, high quality and high efficiency potash fertilizer, especially in tobacco, grape, sugar beet, tea tree, potato, Potassium Sulphate flax and all kinds of fruit trees, such as the crop of avoiding chlorine crops, is an indispensable fertilizer;
Potassium sulfate-type compound fertilizer using potassium chloride low-temperature conversion, chemical synthesis, spray granulation process produced, good stability, in addition to the plant must be N, P, K three major nutrients, but also contains S, Ca, Mg, Zn, Fe, Cu and other trace elements. This fertilizer is suitable for a variety of cash crops, especially the chlorine-repellent 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 ammonia). Potassium sulfate, Potassium Sulphate urea and other small amounts of impurities such as calcium sulfate, phosphoric acid iron, aluminum, magnesium and other salts, as well as trace amounts of incomplete potassium chloride.
First, in acidic soils, excess sulfate root can aggravate the acidity of the soil, and even aggravate the toxicity of active aluminum and iron to crops in the soil. Under flooded conditions, too much sulfate will be reduced to produce hydrogen sulfide, causing the victim to become black. Therefore, Potassium Sulphate long-term application of potassium sulfate with manure, alkaline phosphate and lime, reduce acidity, in practice should be combined with the drainage of the field measures to improve ventilation.
Secondly, in calcareous soil, calcium sulfate (gypsum) is not easily dissolved in sulfate and soil. Too much calcium sulfate will cause soil compaction, and attention should be paid to manure.
Third, the focus on the use of chloride crops, such as tobacco, tea tree, grapes, sugar cane, sugar beets, watermelon, yam and other potassium sulfate not only increase production, Potassium Sulphate but also improve quality. Potassium sulfate is more expensive than potassium chloride, supply less, should be focused on chlorine-sensitive and hi-sulphur potassium, economic crops, the benefits will be better.
Finally, the fertilizer is a physiological acidic salt, Potassium Sulphate the application of alkaline soil can reduce soil ph.