Is ammonium sulfate acidic or alkaline?

Ammonium sulfate is a common chemical substance. It is a strong acid and weak base salt. If it is put into an aqueous solution, ammonium sulfate will show acidity. It is a nitrogen fertilizer among inorganic fertilizers. It is an acidic fertilizer and cannot be used for a long time. Once used for a long time, it will easily lead to soil acidification and compaction, which requires improvement. In addition, this ammonium sulfate cannot be used to produce organic fertilizers. In addition to being an excellent nitrogen fertilizer, adding it to the electroplating solution can increase conductivity.

Ammonium sulfate

Colorless crystals or white granules. Odorless. Decomposes above 280℃. Solubility in water: 70.6g at 0℃, 103.8g at 100℃. Insoluble in ethanol and acetone. The pH of 0.1 mol/L aqueous solution is 5.5. Relative density: 1.77. Refractive index: 1.521. Ammonium sulfate is mainly used as a fertilizer and is suitable for a variety of soils and crops. It can also be used in textiles, leather, medicine and other fields.

Uses of ammonium sulfate: An excellent nitrogen fertilizer (commonly known as fertilizer powder), suitable for general soil and crops. It can make branches and leaves grow vigorously, improve fruit quality and yield, and enhance the resistance of crops to disasters. It can be used as base fertilizer, topdressing and seed fertilizer. It can undergo double decomposition reaction with salt to produce ammonium chloride, react with aluminum sulfate to produce ammonium alum, and be used with boric acid to manufacture refractory materials.

Adding it to the plating solution can increase conductivity. It is also a catalyst for food color, a nitrogen source for culturing yeast in fresh yeast production, an auxiliary dyeing agent for acid dyes, and a deliming agent for leather. In addition, it is also used in beer brewing, chemical reagents and battery production, etc. Another important function is to mine rare earths. Ammonium sulfate is used as the raw material, and the rare earth elements in the ore are exchanged out in the form of ion exchange. The leaching liquid is collected, impurities are removed, precipitated, pressed, and burned to form rare earth ore. It takes about 5 tons of ammonium sulfate to mine and produce 1 ton of rare earth ore.

It has many biological uses, mostly in protein purification processes, because ammonium sulfate is an inert substance and does not easily react with other biologically active substances. It can protect protein activity to the greatest extent during the purification process. In addition, ammonium sulfate is extremely soluble and can form a high-salt environment, preparing for protein precipitation and subsequent high-salt purification. There is a big difference in the solubility of ammonium sulfate at zero degrees and at room temperature of 25 degrees. The following is the molar concentration of ammonium sulfate at different saturations at two temperatures.