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Kerosene

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Kerosene is a combustible hydrocarbon liquid that serves as a vital energy source worldwide. It is primarily derived from petroleum through a chemical separation process. This liquid is essential for modern transportation, especially for powering jet engines in aircraft. Some highly refined versions, known as RP-1, are even used to fuel certain rocket engines. Beyond aviation, kerosene is a common household fuel for cooking and lighting in many regions.

Kerosene bottle
Kerosene bottle

Because it is so useful, the world consumes approximately 5,500,000 barrels of kerosene every day as of July 2023.

To understand how kerosene is made, one must look at the process of fractional distillation. This method involves heating crude petroleum to separate it into different components based on their properties. Kerosene is a clear, low-viscosity liquid formed during this stage. Its chemical makeup consists of hydrocarbon molecules, which typically contain between 6 and 20 carbon atoms. Most kerosene molecules specifically contain between 9 and 16 carbon atoms.

Kerosene Storage Tank
Kerosene Storage Tank

These molecules are mostly composed of alkanes, which are straight or branched chains, and naphthenes, which are ring-shaped molecules. Together, these two types of hydrocarbons account for at least 70% of the liquid's volume.

Kerosene is classified into different grades to ensure safety and efficiency. ASTM International recognizes two main grades: 1-K and 2-K. Grade 1-K contains less than 0.04% sulfur by weight. Because it has very little sulfur, it burns much cleaner and produces fewer toxins or deposits. This makes 1-K the preferred choice for indoor heaters and stoves. In contrast, Grade 2-K contains a higher sulfur content of 0.3% by weight. In the United Kingdom, different standards also exist. BS 2869 Class C1 is a light grade for lanterns and camping stoves. BS 2869 Class C2 is a heavier distillate used for domestic heating oil.

The history of kerosene spans many centuries and different cultures. As early as the ninth century, the Persian scholar Rāzi described methods for distilling kerosene. He used an apparatus called an alembic to produce what he called "white naphtha." He even used clay or chemicals like ammonium chloride to help refine the process.

Al-RaziInGerardusCremonensis1250
Al-RaziInGerardusCremonensis1250

During the Ming Dynasty in China, petroleum was purified and used for lamp fuel. In the 1800s, inventors worked to create more reliable versions of this fuel from coal and oil shale.

Abraham Gesner Photo
Abraham Gesner Photo

In North America, Abraham Gesner played a major role in the development of the fuel. A geologist from Nova Scotia, Gesner demonstrated a process to create liquid kerosene from bituminous coal in 1846. He coined the name "kerosene" as a contraction of the Greek word *kērós*, meaning wax. He registered "Kerosene" as a trademark in 1854. Around the same time, Scottish chemist James Young was also working with paraffin oil. Young built the first commercial oil-works in Bathgate, Scotland, in 1851.

Kerosene queue
Kerosene queue

Another important figure was Samuel Martin Kier, who distilled kerosene from crude oil. Historians often call Kier the "Grandfather of the American Oil Industry."

Safety is a major concern when handling kerosene due to its flammable nature. It must be carefully distinguished from gasoline, which is much more volatile and burns more easily. To prevent dangerous mistakes, some areas use specific color-coded containers. For example, in Pennsylvania, the law requires kerosene containers to be blue. This helps people tell them apart from red gasoline containers or yellow diesel containers.

Kerosene bottle
Kerosene bottle

Kerosene has specific physical limits, such as a flash point between 38 and 72 degrees Celsius. It also has a freezing point that varies by grade, with aviation fuel standardized at -47 degrees Celsius.

While kerosene is a powerful tool, it also presents significant environmental and health challenges. The World Health Organization classifies kerosene as a polluting fuel. When used inside homes, the smoke from kerosene can contain high levels of harmful particulate matter. This exposure is linked to serious health risks, including asthma, respiratory infections, and tuberculosis. It is also associated with higher risks of cancer and adverse pregnancy outcomes.

Old Kerosene stoves
Old Kerosene stoves

Because of these risks, health experts recommend that governments stop promoting its use for household purposes. Despite these concerns, the fuel remains deeply integrated into global systems, from small outboard motors in Asia to massive jet engines in the sky.

Kerosene truck Aichi Japan
Kerosene truck Aichi Japan
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🖼️ Images & Media (8)
File:Kerosene bottle.jpg
Kerosene bottle.jpg
File:Al-RaziInGerardusCremonensis1250.JPG
Al-RaziInGerardusCremonensis1250.JPG
File:Kerosene queue.jpg
Kerosene queue.jpg
File:Abraham Gesner Photo.png
Abraham Gesner Photo.png
File:Kerosene truck Aichi Japan.jpg
Kerosene truck Aichi Japan.jpg
File:Kerosene Storage Tank.jpg
Kerosene Storage Tank.jpg
File:Rippingille Albion Lamp Coy c1900 advert.jpg
Rippingille Albion Lamp Coy c1900 advert.jpg
File:Old Kerosene stoves.jpg
Old Kerosene stoves.jpg
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