Mole Project

Compound: Ammonium Sulfate ((NH4)2SO4 )

By: Katelyn Luck Period: R1

Name of mole: Fert the Mole

The theme of this mole is to demonstrate the correlation existent between the compound, Ammonium Sulfate, and agricultural production. If you refer to the uses and Purposes section of this page it is evident that Ammonium Sulfate is quintessential to the growth of plants as it is commonly used as a soil fertilizer. The mole is represented as a farmer to display the reliance humankind assumes for fertilizers such as Ammonium Sulfate for the production of crops and other food stuff. The green beans that serve as the background for this smore demonstrate some of these crops humans incorporate daily into our livelihood that are able to develop due to the properties Ammonium Sulfate retains. Lastly, the name of the mole is representative of this compounds main use aforementioned, fertilizer, and is representative of this idea, introducing the reader to the compound's uses effectively.

Correct Molar Mass: 132.14 g/mol


(28.014)+(8.0632)+(32.065)+(63.996)=132.1382 g/mol= 132.14 g/mol

Uses and Purposes

Ammonium Sulfate, like Ammonia is used for many commercial processes as a soil fertilizer and is an inorganic salt unlike ammonia which exists most prevalently in gaseous form. For alkaline soils the ammonium ion forms acid, lowering the ph of the soil while yielding nitrogen necessary for plant growth. Ammonium sulfate is used primarily as a nitrogen source in commercial fertilizer mixtures or as a direct application fertilizer, which accounts for >90% of the total amount. It is further used in a variety of industrial applications and is also approved as a direct food additive in the EU. This theme of agriculture is also presented as Ammonium Sulfate is used as an adjuvent for water soluble herbicides and fungicides, necessary for the production of food source in contemporary society.

It also may be used for the precipitation of proteins or for purification of antibodies in the laboratory setting and is useful for crystallographic analysis of nucleic acids and proteins, examining the arrangement of atoms.

Ammonium Sulfate may be eliminated if introduced to the human body by renal excretion. It has an important role in the detoxification of various endogenous and exogenous compounds to be excreted in the urine (pubchem).

Why Farmers?

Farmers can be exposed to ammonium sulfate when they work or are applying fertilizers to the fields. They are also at risk from becoming exposed to the toxic compound ammonia from decaying manure.

Controversy over Potential Health Complications:

While some scientists believe there to be a connection between respiratory complications and the exposure to Ammonium Sulfate, others do not see this relation which is clearly seen through exposure to compounds such as Ammonia. Many factors play in to whether or not a person may be harmed by the compound. These factors include the dose (how long), duration (how long), and how an individual comes in contact with it considering your age, weight, diet, family traits, sex, and lifestyle.

There is no overwhelming evidence that exposure to the levels of Ammonium Sulfate in the environment cause birth defects or other developmental effects. One study in animals showed that exposure of mothers to very high levels of ammonium sulfate caused their newborn offspring to be smaller than normal, but this occurred at levels of amonium sulfate that also affected the mothers.

Interesting Fact: Possibility of Respiratory Problems due to exposure

A cross-sectional study of male workers at two fertilizer factories in Saudi Arabia showed a significant association between exposure to ammonium sulfate and respiratory symptoms including bronchial asthma. Additionally, those workers exposed to ammonium sulfate levels above the American Conference of GOvernmental Industrial Hygienists (ACGIH) threshold limit value of 25.4 ppm (18 mg/m3) had significantly higher relative risks for cough, phlegm , wheezing, and asthma than workers exposed to levels below the TLV.

Interesting Fact: Case Report on Compound

An 85 year old woman was found dead lying on the ground outside her house in the middle of March after drinking a total dose of 1500 mg/kg of ammonium sulfate dissolved in beer in a suicidal attempt. The total dose was then administered to three rabbits, all of which showed similar symptoms such as irregular respiratory rhythms, and convulsions until they fell into respiratory failure with cardiac arrest. There was a remarkable increase in the concentration of ammonium ion and inorganic sulfate ion in serum,a and blood gas analysis showed severe damaging the central nervous system without microscopic change.

Process of Construction through Images

Properties of Ammonium Sulfate:

Physical Properties:

-White Crystalline Powder

-Odorless Solid

-The Density of Ammonium Sulfate is 1.77 g/mL at 25 degrees C

-Melting Point: 280 degrees C

-pH: 5.5 (0.1 M aq solution)


-Non Flammable

- Solubility in water of 764 g/l at 25 deg C

-Insoluble in alcohol and acetone

-When a little Ammonium Sulfate is added to a fused potassium nitrate, a vigorous reaction occurs attended by a flame.