Mercedes Mullins
Gasoline, or petrol, is a petrochemical product derived from the fractional distillation of petroleum, a fossil fuel. It is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule, including paraffins (alkanes), olefins (alkenes), napthenes (cycloalkanes), and aromatics. The composition of gasoline varies depending on the oil refinery that produces it, and it is chemically enhanced with additives to improve performance and stability. Gasoline is highly flammable and toxic, and its ability to resist premature ignition is measured by its octane rating.
| Characteristics | Values |
|---|---|
| Composition | A homogeneous mixture of hydrocarbons with between four and twelve carbon atoms per molecule |
| Other Names | Gasoline (North American English), Petrol (Commonwealth English) |
| Physical State | Liquid |
| Colour | Transparent, yellowish |
| Boiling Point | Near 85 °C (185 °F) |
| Production | Produced from crude oil or petroleum, which is pumped from deep underground |
| Production Process | Crude oil is heated in a distillation column, separating different hydrocarbon chains through different boiling points |
| Production Location | Oil refineries |
| Toxicity | Toxic and carcinogenic |
| Usage | Fuel for spark-ignited internal combustion engines |
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What You'll Learn
Gasoline is toxic
Gasoline, or petrol, is a petrochemical product that is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule. It is a transparent, yellowish, and highly flammable liquid, normally used as a fuel for spark-ignited internal combustion engines. Gasoline is toxic and can seriously damage a person's health.
The National Institute for Occupational Safety and Health (NIOSH) has designated gasoline as a carcinogen. Physical contact, ingestion, or inhalation can all cause health problems. Ingesting large amounts of gasoline can cause permanent damage to major organs. Swallowing gasoline can affect many parts of the body, and even lead to tissue death in the airway or gastrointestinal tract. Infection, shock, and death can follow, even several months after ingestion. Scars may form in the airway or gastrointestinal tract, leading to long-term problems with breathing, swallowing, and digestion.
If gasoline gets into the lungs, it can cause serious and possibly permanent lung damage. The fumes or vapors of gasoline are also harmful and can cause damage to the skin, eyes, and lungs. Burning gasoline releases several harmful chemicals, including carbon monoxide, which is deadly when inhaled in high concentrations or for a prolonged period. For this reason, running a vehicle or using gas-fueled tools in an enclosed area is unsafe.
Gasoline poisoning can occur through swallowing gasoline, breathing in its vapors, skin contact, or eye contact. If someone suspects gasoline poisoning, they should call Poison Control. In the United States, the Poison Help hotline can be reached at 1-800-222-1222.
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Crude oil is a fossil fuel
Car fuel, or gasoline, is a petrochemical product derived from the fractional distillation of petroleum. Petroleum, or crude oil, is a fossil fuel, formed from the remains of plants and animals that lived millions of years ago. Over time, these remains were buried under layers of sand, silt, and rock, and the intense heat and pressure from these layers transformed them into crude oil and natural gas. Crude oil is a mixture of hydrocarbons, which can exist in liquid or gaseous form, found in underground pools or reservoirs within sedimentary rocks.
The process of refining crude oil to produce gasoline was first commercialized in 1891 with the Shukhov cracking process, which increased the percentage of lighter products obtained from crude oil. Gasoline is a complex mixture of hydrocarbons, including paraffins (alkanes), olefins (alkenes), napthenes (cycloalkanes), and aromatics. The specific composition of gasoline depends on the oil refinery, as different refineries have varying processing units and techniques.
One of the key characteristics of gasoline is its octane rating, which measures its resistance to premature ignition, or "knocking." To enhance the octane rating, additives such as tetraethyl lead were historically used, but due to health hazards, modern automotive gasoline has replaced this with alternative additives. The performance specifications of gasoline also vary seasonally, with less volatile blends being used during summer to minimize evaporative losses.
While the majority of sources consider crude oil to be a fossil fuel, there is a theory that challenges this notion. The abiotic oil theory proposes that oil does not originate from living precursors like algae, plankton, or dinosaurs, but rather forms deep beneath the Earth's crust due to immense pressure and the decay of nuclear elements. This theory is supported by the presence of oil in non-porous and igneous rocks, as well as the discovery of oil on other planets and celestial bodies in our solar system. However, the consensus among scientific communities and organizations, such as the U.S. Energy Information Administration, still classifies crude oil as a fossil fuel.
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Gasoline is a mixture of hydrocarbons
Gasoline, or petrol, is a mixture of hydrocarbons, with between four and twelve carbon atoms per molecule, otherwise known as C4–C12. It is a petrochemical product, a transparent, yellowish, and flammable liquid, and is used as a fuel for spark-ignited internal combustion engines.
The mixture is composed of paraffins (or alkane), olefins (alkenes), napthenes (cycloalkanes), and aromatics. The term 'paraffin' is used specifically within the oil industry, rather than 'alkane'. The composition of gasoline depends on the oil refinery that produces it, as each refinery has different processing units.
Straight-run gasoline, or naphtha, is distilled directly from crude oil. It was once a leading source of fuel, but its low octane rating required the addition of organometallic fuel additives, primarily tetraethyl lead. However, due to health hazards, tetraethyl lead is no longer used in automotive gasoline.
The performance specification of gasoline varies with the season, requiring less volatile blends in summer to minimise evaporative losses.
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Tetraethyl lead was used to increase octane rating
The primary component of car fuel, or gasoline, is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule, known as C4–C12. Gasoline is a petrochemical product derived from the fractional distillation of petroleum and chemically enhanced with additives.
One such additive historically used was tetraethyl lead, which increases the octane rating of gasoline. Octane rating refers to the ability of a particular gasoline blend to resist premature ignition, which causes 'knocking' and reduces efficiency in reciprocating engines. Tetraethyl lead was first mixed with gasoline in the 1920s and was widely used as a fuel additive for much of the 20th century.
Tetraethyl lead acts as a negative catalyst, slowing down the combustion of gasoline. This allowed engine compression to be raised, increasing vehicle performance and fuel economy. However, it was discovered that tetraethyl lead caused lead poisoning and was toxic to the human brain, especially in children. Early symptoms of acute exposure include eye and skin irritation, sneezing, fever, vomiting, and a metallic taste in the mouth. More severe symptoms include pulmonary edema, anemia, ataxia, convulsions, severe weight loss, delirium, irritability, hallucinations, and damage to cardiovascular and renal organs.
Due to health and environmental concerns, tetraethyl lead has been phased out of automotive gasoline in many countries, although it is still used in aviation, off-road motor vehicles, and racing car engines.
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Gasoline is a petrochemical product
Gasoline, or petrol, is a petrochemical product derived from the fractional distillation of petroleum. It is a transparent, yellowish, and flammable liquid that is used as fuel for spark-ignited internal combustion engines. The process of fractional distillation involves separating the different components of petroleum, such as hydrocarbons, through heating and evaporation. The resulting gasoline is a mixture of paraffins (alkanes), olefins (alkenes), naphthenes (cycloalkanes), and aromatics.
Petrochemicals are chemical products obtained from the refining of petroleum, coal, or natural gas, as well as renewable sources like maize, palm fruit, or sugar cane. They are used to create a wide range of consumer products, including electronics, vehicles, airplanes, plastics, and more. The largest petrochemical industries are located in the United States and Western Europe, with significant growth occurring in the Middle East and Asia.
The production of gasoline involves the processing of crude oil in oil refineries. The resulting gasoline has a boiling point of around 85°C, making it well-suited for early carburetors. To improve its performance and stability, various additives are introduced, such as tetraethyl lead, which was historically used to increase the octane rating. However, due to health hazards, tetraethyl lead is no longer used in automotive gasoline.
The composition of gasoline can vary depending on the oil refinery that produces it, as different refineries have distinct processing units. One of the important aspects of gasoline production is the reduction of sulfur content. Additionally, the performance specifications of gasoline vary seasonally, with less volatile blends being required during the summer to minimize evaporative losses.
Gasoline is a high-volume and profitable product in the petroleum industry. It serves as the basis of automobile fuel and plays a crucial role in transportation and mobility. However, it is important to recognize that gasoline is toxic and has been designated as a carcinogen by the National Institute for Occupational Safety and Health (NIOSH).
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Frequently asked questions
Car fuel, or gasoline, is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule. It is derived from the fractional distillation of petroleum, or crude oil, which is a fossil fuel.
Gasoline is used as fuel for spark-ignited internal combustion engines. It is injected into either the intake manifold or the combustion chamber, where it is combined with air and ignited by a spark plug.
Gasoline is made from a thick, dark substance called crude oil, which is pumped from deep underground. Crude oil is a mixture of liquid hydrocarbons, which are organic compounds made up of hydrogen and carbon molecules.
Crude oil is heated in a distillation column, and different hydrocarbon chains are separated by their boiling points. Hydrocarbon chains with seven to eleven carbons are used for gasoline, while those with more than twelve carbons are used for heavier fuel oils.
Gasoline is toxic and carcinogenic. Exposure can occur through swallowing, breathing in vapors, or skin and eye contact. Ingesting large amounts can cause permanent damage to major organs, and it is important to seek medical help immediately if this occurs.
