Hi fellas. . .
I've been looking for a method to separate toluene from gasoline via distillation.

And I found so far is that gasoline compositions contain about 20-40% v/v of toluene. The boiling point for toluene is 111C, and the gasoline contains no hydrocarbons that have a boiling point near this (the closest hydrocarbon was within about 10 degrees of 111C) .....

I am wondering if it is possible to extract toluene via distillation, or any other method???

You are lucky I have some time to kill and am in a distillation frame of mind. Your grammar is atrocious, I had to heavily edit this thread to make it resemble the English language. You posted this in the wrong section too.

What you are after is a fractional distillation. The effectiveness of a fractional distillation depends on the range of boiling points of the components being separated, meaning the farther apart in boiling point each component is the easier it will be to separate them.

When a mixture is fractionally distilled you have what are called "theoretical plates." A plate refers to an equivalent simple distillation. The taller the column, the more theoretical plates, and the better the separation will be.

In petroleum refining very tall towers are used to separate the various components of oil into useful fuel components. It is certainly possible to separate toluene from gasoline IF you have a large enough column.

There are some additional factors to keep in mind when separating chemicals. Depending on what some of the other components are in your mixture you might form an azeotrope, a constant boiling mixture of two or more components that can not be separated by distillation. In these situations you can add other chemicals to make a new azeotrope with the components you do not want, or you can use special filters such as zeolites.

If you wanted to push the limits of science further you could use gaseous diffusion techniques to slowly separate molecular compounds based on their mass differences. You can also chemically react the components of the mixture into compounds that are easier to separate, distill the compounds, and convert them back into the original compound. This is sometimes called protection/deprotection.

You may wish to consult petroleum engineering books for more detailed information. It is a vital area of industrial chemistry to remove benzene and other aromatic molecules from petroleum feedstock since these substances are a health hazard.

You mistaken fraction with boiling point around 110 degrees Celsius which could amount up to the percentage you mentioned, but as Mega said de-aromatization is standard in petroleum refining. While it is true that octane number rise with aromatic content, why would anyone just burn very versatile compounds like benzene and toluene? Eco-frenzy is just yet another factor that limit its content as Mega mentioned.

I can think of a few reasons you would want toluene, but why obtain it from gasoline? It is used as a solvent in many applications, a stripper being one such. While I do not know its concentration, I was able to find it at a local hardware store.

I can think of a few reasons you would want toluene, but why obtain it from gasoline? It is used as a solvent in many applications, a stripper being one such. While I do not know its concentration, I was able to find it at a local hardware store.

I believe the original intent is to have a backup source for toluene in the event that hardware stores stop carrying it. Also, it gives people in more restricted countries a way to obtain toluene.

Just because it's in the store today doesn't mean it will be in there tomorrow.