Product Description
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 and 24% sulfur.
Properties:-
Ammonium sulfate becomes ferroelectric at temperatures below -49.5 °C. At room temperature it crystallises in the orthorhombic system, with cell sizes of a = 7.729 Å, b = 10.560 Å, c = 5.951 Å. When chilled into the ferrorelectric state, the symmetry of the crystal changes to space group Pna21.
Ammonium sulfate decomposes upon heating above 250 °C, first forming ammonium bisulfate. Heating at higher temperatures results in decomposition into ammonia, nitrogen,sulfur dioxide, and water.
As a salt of a strong acid (H2SO4) and weak base (NH3), its solution is acidic; pH of 0.1 M solution is 5.5. In aqueous solution the reactions are those of NH4+ and SO42 ions. For example, addition of barium chloride, precipitates out barium sulfate. The filtrate on evaporation yields ammonium chloride.
Melting point | 235 °C (455 °F; 508 K) (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, alcoholand ether |
Specifications Based on Standard: GB535-1995
Item |
Standard |
Typical Result |
Appearance |
Colorless or yellowish crystal |
Pass |
Size |
2-4mm |
Pass |
Nitrogen |
21.0% min |
21.1% |
Moisture |
1.0% max |
0.85% |
Free Acid |
0.03% max |
0.03% |
Iron (Fe) |
0.007% max |
0.002% |
Arsenic (As) |
0.00005% max |
0.00002% |
Heavy Metals |
0.005% max |
0.005% |
Water-Insoluble Matters |
0.01% max |
0.004% |
Application:-
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.
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.
Packaging & Delivery
Packaging Details: | 25 kg,50 kg/bag PP woven bag with PE linner bag, palletized Jumbo bag |
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| Delivery Detail: | 10-15 Days after confirm contract |
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Storage & transportation
Stored in dry, cool airiness place, far away from heat, avoid insolation, sign with no moisture and no insolation.
We established in 2004, is located in jinzhou city, hebei province. We joinville is one of the largest chemical industry base of hebei, Our annual sales, can achieve 200 million yuan.
We are a professional chemicals manufacturer, our products are divided into three categories, agricultural fertilizer, leather chemicals, washing chemicals. We produce ammonium sulfate 200000 tons a year in the field of agricultural fertilizer, 50000 tons a year in the field of leather chemicals we produce formic acid, glacial acetic acid, 50000 tons, 30000 tons of sodium formate. We produced every year in the field of XiDiPin sodium tripolyphosphate, 30000 tons, 20000 tons of SLES, LABSA10000 tons.
Now our main markets in Asia and Europe, to the future we will set up sales network in more than 200 countries around the world.
Honesty is our principle in business, the product quality is fundamental to our survival, we want all our customers, have a chance to visit our factory, we will establish a solid and reliable cooperation relationship!
