Yuncheng supplies ammonium sulfate

Ammonium sulfate is an inorganic substance, chemical formula is (NH4) 2SO4, colorless crystal or white particles, odorless. Decomposition above 280 ℃. Solubility in water: 70.6g at 0 ℃, 103.8g at 100 ℃. Insoluble in ethanol and acetone. The pH of 0.1mol/L aqueous solution is 5.5. The relative density is 1.77. The refractive index is 1.521. Ammonium sulfate is mainly used as fertilizer for various soils and crops. It can also be used in textile, leather, medicine, etc.

On May 24, 2013, the domestic ammonium sulfate market did not fluctuate much, and the phenomenon of high reporting and low moving on the market was common. Taiyuan Iron&Steel auctioned 480 tons of ammonium sulfate on the same day, with the starting price of 550 yuan/ton and the transaction price of 560 yuan/ton, basically reflecting the slowing down of the ammonium sulfate market. Industry insight study "Operation Situation of Ammonium Sulfate Industry in China"

In addition, it is also used in beer brewing, chemical reagent and battery production. Another important role is to mine rare earth. Ammonium sulfate is used as raw material for mining. The rare earth elements in the mineral soil are exchanged by ion exchange, and then the leaching solution is collected to remove impurities, precipitate, press and burn. After that, the rare earth raw ore is formed. Each ton of rare earth raw ore mined and produced requires about 5 tons of ammonium sulfate.

There are also many biological uses, most of which are used in protein purification process. Because ammonium sulfate is an inert substance, it is not easy to react with other bioactive substances, and it can largely protect the protein activity in the purification process. In addition, the solubility of ammonium sulfate can form a high salt environment, making preparations for protein precipitation and subsequent high salt purification. The solubility of ammonium sulfate at 0 ℃ is quite different from that at normal temperature of 25 ℃. The following are the molar concentrations of ammonium sulfate with different saturations at two temperatures.

First aid measures

Skin contact: Take off contaminated clothes and wash with plenty of flowing water. Eye contact: Lift the eyelids and flush with flowing water or normal saline for at least 15 minutes. Get medical attention. Inhalation: leave the site to fresh air. If breathing is difficult, give oxygen. Get medical attention. Ingestion: drink enough warm water to induce vomiting. Get medical attention.

Fire fighting measures

Hazard characteristics: toxic smoke generated by thermal decomposition. Hazardous combustion products: nitrogen oxides and sulfides. Extinguishing method: firefighters shall wear full body fire and gas protective clothing and extinguish the fire upwind. When putting out a fire, try to move the container from the fire site to an open place.