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Naphtha

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Naphtha is a flammable liquid mixture made of hydrocarbons. Hydrocarbons are molecules composed of hydrogen and carbon atoms. This substance is a vital component in many industrial processes. It is most commonly a fraction of crude oil. However, it can also be produced from natural-gas condensates or petroleum distillates. Other sources include the fractional distillation of peat and coal tar.

Camp fuel
Camp fuel

Because it is highly volatile, it evaporates and ignites very easily. This property makes it useful for fuels and chemical manufacturing.

The production of naphtha often relies on fractional distillation. This is a process where liquids are heated to separate them into different parts. In this process, components with different boiling points rise at different rates. Naphtha is typically a light fraction of petroleum. This means it has a lower boiling point than heavier liquids like diesel.

Camp fuel
Camp fuel

Scientists often categorize naphtha into two main types: light and heavy. These categories are based on the number of carbon atoms in each molecule. Light naphtha has fewer carbon atoms and a lower boiling point. Heavy naphtha contains more carbon atoms and is a denser liquid.

Naphtha serves several distinct roles in the modern world. One major use is as a dilutant for heavy crude oil. Heavy crude oil is often too viscous, or thick, to move through pipelines. It is also difficult to pump onto large oil tankers. By mixing naphtha into the heavy oil, the viscosity is reduced. This allows the oil to flow more easily during transport. This process is becoming more important as the world uses more heavy oil reserves.

Camp fuel
Camp fuel

Once the transport is finished, the naphtha can often be recycled.

Another primary use for naphtha is as a specialized fuel. Light naphtha is used in wick-based cigarette lighters. These devices draw the liquid into a wick from a reservoir. The liquid is then ignited using a flint and a wheel.

Camp fuel
Camp fuel

Campers often use a version of naphtha known as "white gas." This is used in outdoor stoves and oil lanterns. Naphtha is often preferred over kerosene for these tools because it clogs fuel lines less. However, it is not a very efficient fuel for internal combustion engines. It has a low octane rating, typically between 40 and 70 RON. Using it in these engines can cause noisy combustion due to high pressure.

Humans have been aware of these substances for thousands of years. The word naphtha has ancient roots in Middle Persian, meaning "wet." It traveled through Greek and Latin to reach English. Historical records from around 675 BC mention naphtha in a treaty. In the second century BC, the book of II Maccabees describes a "thick water" that caught fire in the sun. Ancient Greeks used the term to describe any kind of petroleum or pitch.

Camp fuel
Camp fuel

In the 19th century, the term "solvent naphtha" became common. This refers to products like xylene used for cleaning. It was even a main ingredient in Fels Naptha laundry soap. Later, the naphtha was removed from that soap because it posed a cancer risk.

The term "nafta" also has different meanings in other languages. In many European countries, such as Italy, Bulgaria, and Serbia, it refers to diesel fuel or crude oil. In the Czech Republic and Slovakia, it is also used for diesel. In Argentina, Uruguay, and Paraguay, people use the word to mean gasoline. This shows how a single word can represent many different petroleum products depending on where you are.

Camp fuel
Camp fuel

These linguistic differences reflect the wide variety of petroleum products used globally.

While naphtha is useful, it requires strict safety management. It is a flammable mixture of hydrocarbons that can cause fires. Exposure can happen through inhalation, ingestion, or skin and eye contact. It can also cause irritation to the airways and skin.

Camp fuel
Camp fuel

In the United States, OSHA sets a permissible exposure limit for workers. This limit is 100 parts per million over an eight-hour workday. The NIOSH group has set a similar recommended limit. If levels reach 1000 parts per million, the substance is immediately dangerous to life and health. Therefore, industrial handling must always follow strict safety protocols.

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