Specification parameters

essential information

Ammonium sulfate is an inorganic substance with the chemical formula (NH4) 2SO4. It is a colorless crystal or white particle with no odor. Decompose above 280 ℃. Solubility in water: 70.6g at 0 ℃ and 103.8g at 100 ℃. Insoluble in ethanol and acetone. The pH of a 0.1mol/L aqueous solution is 5.5. The relative density is 1.77. Refractive index 1.521. Ammonium sulfate is mainly used as fertilizer and is suitable for various soils and crops. It can also be used in textile, leather, medicine and other fields.

application area 

A type of excellent nitrogen fertilizer (commonly known as fertilizer field powder), suitable for general soil and crops, can promote vigorous growth of branches and leaves, improve fruit quality and yield, enhance crop resistance to disasters, and can be used as base fertilizer, topdressing, and seed fertilizer. It can undergo double decomposition reaction with table salt to produce ammonium chloride, react with aluminum sulfate to produce ammonium alum, and together with boric acid, produce refractory materials. Adding it to the plating solution can increase conductivity. It is also a catalyst for food sauce color, a nitrogen source for cultivating yeast in fresh yeast production, an acid dye dyeing aid, and a leather de ashing agent. In addition, it is also used in beer brewing, chemical reagent and battery production. Another important function is to mine rare earths. Ammonium sulfate is used as raw material for mining, and the rare earth elements in the ore soil are exchanged through ion exchange. After collecting the leachate for impurity removal, precipitation, pressing, and incineration, the rare earth ore is obtained. About 5 tons of ammonium sulfate are required to produce 1 ton of rare earth ore for mining.
There are also many biological applications, mostly used in protein purification processes, because ammonium sulfate is an inert substance that is not easily reacted with other bioactive substances. It can protect protein activity to a large extent during the purification process. In addition, ammonium sulfate has excellent solubility and can form a high salt environment, preparing for protein precipitation and subsequent high salt purification. There is a significant difference in the solubility of ammonium sulfate between 0 ℃ and room temperature of 25 ℃. The following are the molar concentrations of ammonium sulfate at different saturation levels at the two temperatures.

Packaging, Storage, Transportation, and Safety

Precautions for operation: Closed operation, local exhaust. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, anti toxic work clothes, and rubber gloves. Avoid generating dust. Avoid contact with acids and bases. Handle with care during transportation to prevent damage to packaging and containers. Equip with emergency response equipment for leaks. Empty containers may contain residual harmful substances.
Storage precautions: Store in a cool and ventilated warehouse. Stay away from sources of fire and heat. It should be stored separately from acids and bases, and avoid mixing storage. The storage area should be equipped with suitable materials to contain leaked materials.
Precautions for use

(1) Do not contact or mix with other alkaline fertilizers or substances to prevent a decrease in fertilizer efficiency.
(2) It is not advisable to apply ammonium sulfate on the same cultivated land for a long time, otherwise the soil will become acidic and cause compaction. If necessary, some lime or organic fertilizer can be applied in moderation. But it must be noted that it cannot be mixed with lime to prevent ammonium sulfate from decomposing and causing nitrogen loss. Generally, the combination of the two should be applied 3-5 days apart.
(3) Not suitable for application on acidic soil. Obtained by neutralization with ammonium hydroxide and sulfuric acid, crystallization, centrifugal separation, and drying.