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Ammonium sulfate


Ammonium sulfate is a salt mixture with two ammonium groups NH4 + and an SO3-2 sulfate group. Ammonium sulfate is an acidic salt. The most important application of ammonium sulfate is the production of chemical fertilizers. Ammonium sulfate is also called ammonium sulfate.


The name of the substance (Persian): Sulphite di-ammonium

The name of the substance (English): di-ammonium sulfate

Brand Name: Ammonium Sulphate

Brand name: Ammonium sulfate

Other names: Ammonium hydrogen sulfate, Ammonium sulfate, Sulfur dioxide ammonium salt

Related Materials: Ammonium Nitrate

Production complexes: Urmia Petrochemical Complex

Diammonium sulfite is a very effective inorganic salt. The most important application is the preparation of chemical fertilizers. It contains 21% nitrogen in the form of positive ammonium ion and 24% sulfur in the form of anion monoxide sulfate. The presence of sulfate in fertilizer to reduce the pH of the soil.



Chemical fertilizers, fire powder, tannery and water purification


Physical and chemical properties:

Molecular formula (NH4) 2SO4

Molar mass 132.14 g / mol

Density 1.769 g / cm3 (20 C)

Solubility in water 70.6 g / 100 mL (0 C) 74.4 g / 100 mL (20 C) 103.8 g / 100 mL (100 C) [1] / insoluble in acetone, alcohol and ether / Melting point 235-280 C, 508 -553 K, 455-536 F (decomposes)

Critical relative humidity 79.2% (30 C)

Flashpoint Non-flammable

Production methods:

A mixture of ammonia gas and water vapor is injected into a reactor containing saturated ammonium sulfate and about 2-4% sulfuric acid at 60 ° C. Sulfuric acid spray into an ammonia gas-filled reactor is produced by dry powder ammonium sulfate. The reaction heat evaporates all the water in the system. Ammonium sulfite can also be made from gypsum (CaSO42H2O). The crushed gypsum is added to the ammonium carbonate solution. Calcium carbonate is precipitated and ammonium sulfate is obtained in solution form.


Safety Information:

The contact of ammonium sulfate with the hand causes irritation or reddening of the skin. The respiration of its dust causes irritation of the nose, throat, lungs and coughing and shortness of breath.