What is Toluene?
Toluene, or also known as toluol, is an aromatic hydrocarbon. It can also be referred as methylbenzene, anisen, and phenyl methane. Toluene is a colorless and water-insoluble liquid. It has the smell that is often associated with paint thinners.
The chemical has the boiling point of 110ºC and melting point of -93ºC. Toluene is considered as a good solvent, which can dissolve other substances. The chemical occurs naturally in crude oil and in the tolu tree. Toluene can also be found in making coke from coal and as a byproduct in the manufacture of styrene.
History of Toluene
Toluene chemical was first isolated by a polish chemist named Filip Walter in 1837 through a distillation process of pine oil. He referred the chemical as rétinnaphte. In 1841, a French chemist named Henri Étienne Sainte-Claire Deville isolated a hydrocarbon from balsam of tolu. Deville recognized that the hydrocarbon that he isolated is similar to Walter’s rétinnaphte and to benzene.
Deville called his isolated hydrocarbon as benzoène. Jöns Jacob Berzelius, later, recommended the name toluin in 1843. In 1850, a French chemist named Auguste Cahours isolated a hydrocarbon from a distillate of wood, which he recognized as similar to Deville’s benzoène. Cahours later named the hydrocarbon as toluene.
What is Toluene Used for in Real Life?
Main use of toluene is as a precursor to benzene. That use is done via hydrodealkylation. Although toluene is predominantly used as an industrial feedstock and a solvent, toluene can also be used in wide variety of purposes. It also has numbers of commercial applications. Some other uses of Toluene in real life can be seen as listed below.
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Although toluene can be beneficial at times, it does not mean that toluene does not have health risk for us. The harmful effects of Toluene can be exposed to us by inhaling, direct contact, and ingestion. The toxicological effects of Toluene have been studied extensively. Some effects of toluene can be seen as listed below.
A prolonged and repeated exposure of toluene can bring us more dangerous effects. The effects may vary from organ damages to death. Those harmful effects include:
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Toluene may have numerous harmful effects that affects us. But, those harmful effects of toluene can be reduced using bioremediation. Bioremediation is a process of treating contaminated organism or environment by altering the environmental conditions to stimulate the growth of microorganisms and degrade the target contaminant.
There are several types of fungi that can be used as bioremediation of toluene, such as Cladophialophora, Exophilia, Leptodontium, Pseureudotium zonatum, and Clasdosporium sphaerospermum. There are also several types of bacteria that can be used for similar purposes. Those microorganisms can degrade toluene. They used toluene as a source of carbon and energy.
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