Ammonium Sulfate Price Fertilizer Food Grade
|Min. Order (Tons)||FOB Price|
|1+||US $69-89 / Ton|
CAS No.: 7783-20-2
Min. Order: 20 metric tons
Place of origin: Shandong province, China
Appearance: Colorless crystal, Ash black lumpish solid
Brand name: SHANGXIN
Packing: 25 kgs or 50 kgs packed in inside plastic bags with outside woven bags
Ammonium sulfate (IUPAC-recommended spelling; Also ammonium sulphate in British English), (NH4)2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains 21% nitrogen as ammonium cations, and 24% sulfur as sulfate anions.
1)The primary use of ammonium sulfate is as a fertilizer for alkaline soils. In the soil the ammonium ion is released and forms a small amount of acid, lowering the pH balance of the soil, while contributing essential nitrogen for plant growth. The main disadvantage to the use of ammonium sulfate is its low nitrogen content relative to ammonium nitrate, which elevates transportation costs.
It is also used as an agricultural spray adjuvant for water soluble insecticides, herbicides, and fungicides. There it functions to bind iron and calcium cations that are present in both well water and plant cells. It is particularly effective as an adjuvant for 2, 4-D (amine), glyphosate, and glufosinate herbicides.
In biochemistry, ammonium sulfate precipitation is a common method for purifying proteins by selective precipitation; Ammonium sulfate is extremely soluble in water and so can make very concentrated solutions which can "salt out" proteins, causing their precipitation at particular concentrations. This provides a convenient and simple means to fractionate complex protein mixtures. As such, ammonium sulfate is also listed as an ingredient for many United States vaccines per the Center for Disease Control.
As a food additive, ammonium sulfate is considered generally recognized as safe (GRAS) by the US Food and Drug Administration, and in the European Union it is designated by the E number E517. It is used as an acidity regulator in flours and breads.
Ammonium sulfate is used on a small scale in the preparation of other ammonium salts, especially ammonium persulfate.
A saturated solution of ammonium sulfate in heavy water (2H2O) is used as an external standard in sulfur (33S) NMR spectroscopy with shift value of 0 ppm.
Ammonium sulfate has also been used in flame retardant compositions acting much like diammonium phosphate. As a flame retardant, it lowers the combustion temperature of the material, decreases maximum weight loss rates, and causes an increase in the production of residue or char. Its flame retardant efficacy can be enhanced by blending it with ammonium sulfamate.
Ammonium sulfate has been used as a wood preservative, but due to its hygroscopic nature, this use has been largely discontinued because of associated problems with metal fastener corrosion, dimensional instability, and finish failures.
sulfuric acid diammonium salt
|Molar mass||132.14 g/mol|
|Appearance||Fine white hygroscopic granules or crystals.|
|Density||1.769 g/cm 3 (20 ° C)|
|Melting point||235-280 ° C, 508-553 K, 455-536 ° F (decomposes)|
|Solubility in water||70.6 g/100 mL (0 ° C)|
74.4 g/100 mL (20 ° C)
103.8 g/100 mL (100 ° C)
|Solubility||insoluble in acetone, alcohol and ether|
|Critical relative humidity||79.2% (30 ° C)|
|EU Index||Not listed|
|LD50||2840 mg/kg, rat (oral)|
|Other anions||Ammonium thiosulfate|
|Other cations||Sodium sulfate|
|Related compounds||Ammonium iron(II) sulfate|