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Ammonium sulfate

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  Post Date: Nov 29,2016
  Expiry Date: May 28,2017
  Detailed Description: Cas No. :7783-20-2 Colorless crystal or white particles. Odorless. Above 280 ℃ decomposition. Solubility in water: 0 ℃ when 70.6g, 100 ℃ when 103.8g. Insoluble in ethanol and acetone. pH 0.1mol / L aqueous solution was 5.5. The relative density of 1.77. Refractive index of 1.521. Ammonium sulfate fertilizer is mainly used for a variety of soils and crops. It can also be used aspects of textile, leather, medicine and other fields.An excellent fertilizer (commonly known fertilize the soil powder), for general soil and crops, foliage make vigorous growth, improve fruit quality and yield, enhance crop resistance to disasters can be used for basic fertilizer, top dressing fertilizer and seed. With salt metathesis reaction was carried manufacturing ammonium chloride, ammonium alum and aluminum sulfate to generate action, together with boric acid and other manufacturing refractory materials. Added to the plating solution to increase conductivity. Food is also a catalyst of caramel, fresh yeast production in cultured yeast nitrogen, acid dyes help dyes, leather deliming agent. In addition, for beer brewing, chemical reagents and battery production. An important role is also rare earth mining, mining ammonium sulfate as raw materials, the use of ion exchange in the form of the mineral soil in the rare earth exchanged out, and then collect leachate impurity removal, sedimentation, pressing, after burning Serve rare earth ore, exploration and production of each 1 tons of rare earth ore is about 12 tons of ammonium sulfate.
Use biological lot, used for protein purification process, since ammonium sulfate are inert substance, less prone to reaction with other biologically active substances that can protect the greatest degree of protein activity during purification, addition, ammonium sulfate soluble polar well, can form a high-salt environment, for protein precipitation and subsequent high salt purified preparation. The solubility of ammonium sulfate at zero and room temperature of 25 degrees is quite different, the following is the molar concentration of ammonium sulfate at a temperature of two different saturation.

  CAS Registry Number:

7783-20-2
  Synonyms: ;Ammonium sulfate (2:1);ammonium sulfate, solution;diammonium sulfate;sulfate, ammonium;sulfuric acid, diammonium salt;ammonium sulphate;Ammonia sulfate;
  Molecular Formula: (NH4)2·SO4
  Molecular Weight: 132.1392
  Molecular Structure: 7783-20-2 Ammonium sulfate
  Hazard Symbols:  Xi:Irritant;
  Risk Codes: R36/37/38:;
  Safety Description: S26:;
S37/39:;

  Company: Shijiazhuang Kunmai chemical technology co., LTD.     [ China ]        
  Contact: Winnie
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