Acetylene
IUPAC name	Ethyne
Identifiers
CAS number	[74-86-2]
SMILES	C#C
Properties
Molecular formula	C2H2
Molar mass	26. IUPAC Nomenclature is a system of naming Chemical compounds and of describing the science of Chemistry in general CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 0373 g/mol
Density	1. The density of a material is defined as its Mass per unit Volume: \rho = \frac{m}{V} Different materials usually have different 09670 kg/m³ gas
Melting point	-80. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. 8 °C (189 K, subl)
Boiling point	-84° C
Acidity (pKa)	25
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Acetylene (IUPAC name: ethine) , C₂H₂, is a hydrocarbon belonging to the group of alkynes. The boiling point of a liquid is the temperature at which the Vapor pressure of the liquid equals the environmental pressure surrounding the liquid In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly The International Union of Pure and Applied Chemistry ( IUPAC) (aɪjuːpæk or ay-yoo-pec) is an international Non-governmental organization In Organic chemistry, a hydrocarbon is an Organic compound consisting entirely of Hydrogen and Carbon. Alkynes are Hydrocarbons that have at least one Triple bond between two Carbon atoms with the formula CnH2n-2. It is considered to be the simplest of all alkynes as it consists of two hydrogen atoms and two carbon atoms. Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 History See also Atomic theory, Atomism The concept that matter is composed of discrete units and cannot be divided into arbitrarily tiny Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6 Acetylene is an unsaturated organic compound because its two carbon atoms are triply bonded. In Chemistry, saturation has five different meanings In Physical chemistry, saturation is the point at which a Solution of a substance An organic compound is any member of a large class of Chemical compounds whose Molecules contain Carbon.

The carbon-carbon triple bond leaves the carbon atoms with two sp hybrid orbitals for sigma bonding, placing all four atoms in the same straight line, with CCH bond angles of 180°.

Acetylene was discovered in 1836 by Edmund Davy who identified it as a "new carburet of hydrogen. Edmund Davy FRS (1785 - 5 Nov[[ 857]] was a professor of Chemistry at the Royal Cork Institution from 1813 and professor of chemistry at the " It was rediscovered in 1860 by French chemist Marcellin Berthelot, who coined the name "acetylene. Marcellin (or Marcelin Pierre Eugène Berthelot ( October 25, 1827 - March 18, 1907) was a French Chemist and Politician " The Nobel Laureate Gustaf Dalén was blinded by an acetylene explosion. Nils Gustaf Dalén ( November 30, 1869 &ndash December 9 1937) was a Swedish Nobel Laureate and industrialist the founder of the

Contents 1 Preparation 2 Reactions 2.1 Reppe chemistry 3 Uses 4 Safety and handling 4.1 Compression 4.2 Toxic effects 4.3 Fire hazard 4.4 Incompatibilities 5 Other meanings 6 Natural occurrence 7 References 8 External links

Preparation

The principal raw materials for acetylene manufacture are calcium carbonate (limestone) and coal. Calcium carbonate is a Chemical compound with the Chemical formula Ca[[Carbon C]] O 3 Limestone is a Sedimentary rock composed largely of the Mineral Calcite ( Calcium carbonate: CaCO3 The calcium carbonate is first converted into calcium oxide and the coal into coke, then the two are reacted with each other to form calcium carbide and carbon monoxide:

CaO + 3C → CaC₂ + CO

Calcium carbide (or calcium acetylide) and water are then reacted by any of several methods to produce acetylene and calcium hydroxide. Coke is a solid Carbonaceous material derived from Destructive distillation of low-ash low-sulfur Bituminous coal. Calcium carbide is a Chemical compound with the Chemical formula of Ca[[Carbide C2]] Carbon monoxide, with the chemical formula CO is a colorless odorless tasteless yet highly toxic Gas. For the Software development tool targeting the Symbian OS, see Carbide A metal acetylide is an Alkyne for which the terminal proton (hydrogen has been replaced by a Metal such as Sodium or an Organolithium. Calcium hydroxide, traditionally called slaked lime, hydrated lime, or pickling lime, is a Chemical compound with the chemical formula This reaction was discovered by Friedrich Wohler in 1862. Friedrich Wöhler (31 July 1800 - 23 September 1882 was a German Chemist, best-known for his synthesis of Urea, but also the first to isolate several

CaC₂ + 2H₂O → Ca(OH)₂ + C₂H₂

Calcium carbide synthesis requires an extremely high temperature, ~2000 degrees Celsius, so the reaction is performed in an electric arc furnace. An electric arc furnace (EAF is a Furnace that heats charged material by means of an Electric arc. This reaction was an important part of the late-1800s revolution in chemistry enabled by the massive hydroelectric power project at Niagara Falls. Hydroelectricity is electricity generated by Hydropower, ie the production of power through use of the gravitational force of falling water The Niagara Falls are massive Waterfalls on the Niagara River, straddling the international border separating the Canadian province of Ontario

Acetylene can also be manufactured by the partial combustion of methane with oxygen, or by the cracking of hydrocarbons. Combustion or burning is a complex sequence of Exothermic chemical reactions between a Fuel and an Oxidant accompanied by the production of Methane is a Chemical compound with the molecular formula. It is the simplest Alkane, and the principal component of Natural gas. Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the In Petroleum geology and Chemistry, cracking is the process whereby complex organic Molecules such as Kerogens or heavy Hydrocarbons In Organic chemistry, a hydrocarbon is an Organic compound consisting entirely of Hydrogen and Carbon.

Berthelot was able to prepare acetylene from methyl alcohol, ethyl alcohol, ethylene, or ether, when he passed any one of these as a gas or vapour through a red-hot tube. Methanol, also known as methyl alcohol, carbinol, wood alcohol, wood naphtha or wood spirits, is a Chemical compound Structure This Hydrocarbon has four Hydrogen Atoms bound to a pair of Carbon atoms that are connected by a Double bond. Ether is a class of Organic compounds which contain an ether group — an Oxygen Atom connected to two (substituted Alkyl Berthelot also found acetylene was formed by sparking electricity through mixed cyanogen and hydrogen gases. Cyanogen is the Chemical compound with the formula ( C[[nitrogen N]]2 Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 He was also able to form acetylene directly by combining pure hydrogen with carbon using electrical discharge of a carbon arc. Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6

Reactions

• Above 400 °C (673 K) the pyrolysis of acetylene will start, which is relatively low for a hydrocarbon. Pyrolysis is the Chemical decomposition of organic materials by heating in the absence of Oxygen or any other reagents except possibly Steam The main products are the dimer vinylacetylene (C₄H₄) and benzene. A dimer is a Chemical or Biological entity consisting of two subunits called Monomers which are held together by either Intramolecular forces Vinylacetylene or butenyne is the Organic compound with the formula C4H4 Benzene, or benzol, is an organic Chemical compound and a known Carcinogen with the molecular formula C 6 H 6 At temperatures above 900 °C (1173 K), the main product will be soot. Soot (ˈsʊt is a general term that refers to the black impure carbon particles resulting from the incomplete combustion of a hydrocarbon
• Using acetylene, Berthelot was the first to show that an aliphatic compound could form an aromatic compound when he heated acetylene in a glass tube to produce benzene with some toluene. Marcellin (or Marcelin Pierre Eugène Berthelot ( October 25, 1827 - March 18, 1907) was a French Chemist and Politician In Organic chemistry, compounds composed of Carbon and Hydrogen are divided into two classes Aromatic compounds which contain Benzene rings Benzene, or benzol, is an organic Chemical compound and a known Carcinogen with the molecular formula C 6 H 6 Toluene, also known as methylbenzene or phenylmethane, is a clear water -insoluble liquid with the typical smell of Paint thinners redolent of Berthelot oxidized acetylene to yield acetic acid and oxalic acid. Acetic acid, also known as ethanoic acid, is an organic chemical compound, giving Vinegar its sour taste Oxalic acid is the Chemical compound with the formula H2C2O4 This Dicarboxylic acid is better described with the He found acetylene could be reduced to form ethylene and ethane. Structure This Hydrocarbon has four Hydrogen Atoms bound to a pair of Carbon atoms that are connected by a Double bond. ETHANE is a mnemonic indicating a protocol used by Emergency services to report situations which they may be faced with especially as it relates to major incidents where
• Polymerization of acetylene with Ziegler-Natta catalysts produces polyacetylene films. In Polymer chemistry, polymerization is a process of reacting Monomer Molecules together in a Chemical reaction to form three-dimensional networks A Ziegler-Natta catalyst is a Reagent or a mixture of reagents used in the production of Polymers of 1-alkenes (α-olefins Polyacetylene ( IUPAC name polyethyne is an Organic polymer with the repeat unit (C2H2n Polyacetylene, a chain of carbon molecules with alternating single and double bonds, was the first organic semiconductor to be discovered; reaction with iodine produces an extremely conductive material. An organic semiconductor is any Organic material that has Semiconductor properties Iodine (ˈaɪədaɪn ˈaɪədɪn or /ˈaɪədiːn/ from ιώδης iodes "violet" is a Chemical element that has the symbol I and Atomic
• In the Kucherov reaction (invented in 1881 by the Russian chemist Mikhail Kucherov)^[1] acetylene is hydrated to acetaldehyde with a mercury salt such as mercury(II) bromide. In Organic chemistry, a hydration reaction is a Chemical reaction in which a Hydroxyl group (OH- and a Hydrogen Cation Acetaldehyde, sometimes known as ethanal, is an organic chemical compound with the formula C[[Hydrogen H]]3CH O or MeCHO Mercury (ˈmɜrkjʊri also called quicksilver or hydrargyrum, is a Chemical element with the symbol Hg ( Latinized hydrargyrum Mercury(II bromide or mercuric bromide is the Chemical compound composed of mercury and Bromine with the formula HgBr2 Before the advent of the Wacker process this reaction was conducted on an industrial scale. ^[2]

Reppe chemistry

Walter Reppe discovered that acetylene can react at high pressures with heavy metal catalysts to give industrially significant chemicals:

• Acetylene reacting with alcohols, hydrogen cyanide, hydrogen chloride, or carboxylic acids to give vinyl compounds:

• With aldehydes to give ethynyl diols. Walter Julius Reppe (b 29 July 1892 in Göringen, d 26 July 1969 in Heidelberg) was a German Chemist. Catalysis is the process in which the rate of a Chemical reaction is increased by means of a Chemical substance known as a catalyst In Chemistry, an alcohol is any Organic compound in which a Hydroxyl group ( - O[[hydrogen H]]) is bound to a Carbon Hydrogen cyanide is a Chemical compound with Chemical formula HCN Carboxylic acids are Organic acids characterized by the presence of a Carboxyl group, which has the formula -C(=OOH usually written -COOH or -CO2H A vinyl compound is any Organic compound that contains a vinyl group (also called ethenyl) &minus C[[Hydrogen H]] =CH sub>2 An aldehyde is an organic compound containing a terminal Carbonyl group.

This is industrially used to produce 1,4-butynediol from formaldehyde and acetylene:

HCCH + CH₂O → CH₂(OH)CCCH₂OH

• With carbon monoxide to give acrylic acid, or acrylic esters, which can be used to produce acrylic glass. Formaldehyde is a Chemical compound with the formula H2CO It is the simplest Aldehyde —an organic compound containing a terminal Carbonyl Carbon monoxide, with the chemical formula CO is a colorless odorless tasteless yet highly toxic Gas. Acrylic acid or prop-2-enoic acid is a Chemical compound ( formula C 3 H 4 O 2 and it Poly(methyl methacrylate ( PMMA) or poly(methyl 2-methylpropenoate is a Thermoplastic and transparent Plastic.

• Cyclicization to give benzene and cyclooctatetraene:

Uses

Approximately 80 percent of the acetylene produced annually in the United States is used in chemical synthesis. Benzene, or benzol, is an organic Chemical compound and a known Carcinogen with the molecular formula C 6 H 6 1357-Cyclooctatetraene ( COT) is an unsaturated Derivative of Cyclooctane, with the formula C8H8 The United States of America —commonly referred to as the The remaining 20 percent is used primarily for oxyacetylene gas welding and cutting due to the high temperature of the flame; combustion of acetylene with oxygen produces a flame of over 3300 °C (6000 °F), releasing 11. Concerning a. " for the verdict on this matter --> Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding Concerning a. " for the verdict on this matter --> Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding The meaning of " blowtorch " varies between Britain and the USA 8 kJ/g. The joule (written in lower case ˈdʒuːl or /ˈdʒaʊl/ (symbol J) is the SI unit of Energy measuring heat, Electricity Oxyacetylene is the hottest burning common fuel gas. ^[3] Acetylene is also used in the acetylene ('carbide') lamp, once used by miners (not to be confused with the Davy lamp), on vintage cars, and still sometimes used by cavers. Carbide lamps, also known as acetylene gas lamps, are simple lamps that produce and burn Acetylene (C2H2 which is created by the reaction The Davy lamp is a Safety lamp containing a candle devised in 1815 by Sir Humphry Davy. Caving or spelunking is the recreational Sport of exploring Caves In contrast Speleology is the scientific study of caves and the cave In this context, the acetylene is generated by dripping water from the upper chamber of the lamp onto calcium carbide (CaC₂) pellets in the base of the lamp. Water is a common Chemical substance that is essential for the survival of all known forms of Life. Calcium carbide is a Chemical compound with the Chemical formula of Ca[[Carbide C2]]

In former times a few towns used acetylene for lighting, including Tata in Hungary where it was installed on 24 July 1897, and North Petherton, England in 1898. Tata (Dotis is a town in north-western Hungary, Komárom-Esztergom county northwest from county seat Tatabánya. Hungary (Magyarország 'mɔɟɔrorsaːg) officially in English the Republic of Hungary ( Magyar Köztársaság, literally Magyar (Hungarian Republic Events 1132 - Battle of Nocera between Ranulf II of Alife and Roger II of Sicily. Year 1897 ( MDCCCXCVII) was a Common year starting on Friday (link will display the full calendar of the Gregorian Calendar (or a Common North Petherton is a small Town in Somerset, England, situated on the edge of the eastern foothills of the Quantocks, and close to the edge of England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland

In modern times acetylene is sometimes used for carburization (that is, hardening) of steel when the object is too large to fit into a furnace. Carburization (often referred to as carburizing) is a heat treatment process which iron or steel is heated to "below the melting point in the presence of a solid liquid Steel is an Alloy consisting mostly of Iron, with a Carbon content between 0 ^[3]

Acetylene has been proposed as a carbon feedstock for molecular manufacturing using nanotechnology. Molecular nanotechnology (MNT is the concept of engineering functional mechanical systems at the molecular scale Since it does not occur naturally, using acetylene could limit out-of-control self-replication.

Acetylene is used to volatilize carbon in radiocarbon dating. Radiocarbon dating is a Radiometric dating method that uses the naturally occurring Radioisotope Carbon-14 (14C to determine the age of The carbonaceous material in the archeological sample reacted in a small specialized research furnace with lithium metal to form lithium carbide (also known as lithium acetylide). Lithium (ˈlɪθiəm is a Chemical element with the symbol Li and Atomic number 3 Lithium carbide, Li2C2 often known as dilithium acetylide is a chemical compound of Lithium and Carbon. The carbide can then be reacted with water, as usual, to form acetylene gas to be fed into mass spectrometer to sort out the isotopic ratio of carbon 14 to carbon 12. Mass spectrometry is an analytical technique that identifies the chemical composition of a compound or sample based on the Mass-to-charge ratio of charged particles

The Future

The use of acetylene is expected to continue a gradual increase in the future as new applications are developed. One new application is the conversion of acetylene to ethylene for use in making a variety of polyethylene plastics. In the past, a small amount of acetylene had been generated and wasted as part of the steam cracking process used to make ethylene. A new catalyst developed by Phillips Petroleum allows most of this acetylene to be converted into ethylene for increased yields at a reduced overall cost. ^[4]

Safety and handling

Compression

Due to the carbon-to-carbon triple bond, acetylene gas is fundamentally unstable, and will decompose in an exothermic reaction if compressed to any great extent. Instability in systems is generally characterized by some of the Outputs or internal states growing without Bounds. Chemical decomposition or analysis is the separation of a Chemical compound into elements or smaller compounds In Thermodynamics, the word exothermic "outside heating" describes a process or reaction that releases Energy usually in the form of Heat, but A chemical reaction is a process that always results in the interconversion of Chemical substances The substance or substances initially involved in a chemical reaction are called A gas compressor is a mechanical device that increases the Pressure of a Gas by reducing its Volume. Acetylene can explode with extreme violence if the pressure of the gas exceeds about 100 kPa (≈14. 5 psi) as a gas or when in liquid or solid form, so it is shipped and stored dissolved in acetone or dimethylformamide (DMF), contained in a metal cylinder with porous filling (Agamassan), which renders it safe to transport and use. Acetone (also known as propanone, dimethyl ketone, 2-propanone, propan-2-one and β-ketopropane) is a colorless mobile flammable Dimethylformamide is the Organic compound with the formula ( CH3)2NC(OH Agamassan (aga is a porous Substrate used to safely absorb Acetylene and thus allow the transport storage and commercial exploitation of an otherwise unstable gas

There are strict regulations on the shipment of dangerous gas cylinders throughout the world. A gas cylinder or tank is a Pressure vessel used to store Gases at high Pressure. Oxy-acetylene welding was a very popular welding process in previous decades, however, the development and advantages of arc-based welding processes have made oxy-fuel welding nearly extinct. Concerning a. " for the verdict on this matter --> Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding Arc welding uses a Welding power supply to create an Electric arc between an electrode and the base material to melt the metals at the welding point Acetylene usage for welding has dropped significantly. However, oxy-fuel cutting is still very popular and oxy-acetylene cutting is present in nearly every metal fabrication shop.

Toxic effects

Inhaling acetylene may cause dizziness, headache and nausea. ^[5] It may also contain toxic impurities: the Compressed Gas Association Commodity Specification for acetylene has established a grading system for identifying and quantifying phosphine, arsine, and hydrogen sulfide content in commercial grades of acetylene in order to limit exposure to these impurities. Phosphine is the common name for phosphorus hydride (PH3 also known by the IUPAC name phosphane and occasionally phosphamine. Arsine is the chemical compound with the formula As[[hydrogen H]]3 Hydrogen sulfide (or hydrogen sulphide) is the Chemical compound with the formula H 2 S. The sulfur, phosphorus and arsenic are carryovers from the synthesis ingredient coke, an impure form of carbon and different, organic impurities would be expected from the thermal cracking of hydrocarbons source.

While the impurities in acetylene can be toxic and even fatal, pure acetylene is of a very low toxicity (not counting the "narcotic" effects). Up to 80% percent, (v/v) acetylene has been administered to surgical patients as a general anaesthetic. A general anaesthetic (or anesthetic, see Spelling differences) drug is an anaesthetic drug that brings about a reversible loss of Consciousness. The trade name for acetylene was "narcylene. " It was used a fair amount experimentally in Germany in their impoverished 1920's, perhaps on several thousand patients. Medically, acetylene was considered to be nearly as safe as nitrous oxide and with a slightly higher potency, allowing for the use of higher percentages of oxygen in the blend; it is about 50% more potent. Nitrous oxide, commonly known as " laughing gas," is a Chemical compound with the Chemical formula N 2 O. However, the use of acetylene and oxygen mixtures was dropped after several gas explosions inside patients' lungs. The energy of these explosions would be expected to exceed any of the flammable inhalation anesthetics due to the instability of the triple bond (cyclopropane would be nearly as bad). It was suggested that such an internal thorax explosion could not occur with air mixtures (without purified oxygen).

Acetylene has been infrequently abused in a manner akin to nitrous oxide abuse up through modern times, according to the literature. Such abuse can result in the death of the abuser due to toxicity of the above mentioned impurities phosphine, arsine, and hydrogen sulfide. Phosphine is the common name for phosphorus hydride (PH3 also known by the IUPAC name phosphane and occasionally phosphamine. Arsine is the chemical compound with the formula As[[hydrogen H]]3 Hydrogen sulfide (or hydrogen sulphide) is the Chemical compound with the formula H 2 S. Since the gas is charged (absorbed) into tanks soaked with acetone over a solid matrix, some acetone comes out with the gas, further contributing to the poisonings. The driver for this abusive behavior is better understood with the view of acetylene's anesthetic properties and addictive behaviors.

Impurities in acetylene are easily detectable by smell. Pure acetylene is a colorless and odorless gas. The characteristic garlic-like odor of technical grade acetylene is attributable to contamination by impurities. Allium sativum L, commonly known as garlic, is a species in the Onion family Alliaceae. Impurities which may be present include: divinyl sulfide, ammonia, oxygen, nitrogen, phosphine, arsine, methane, carbon dioxide, carbon monoxide, hydrogen sulfide, vinyl acetylene, divinyl acetylene, diacetylene, propadiene, hexadiene, butadienyl acetylene, and methyl acetylene. Ammonia is a compound with the formula N[[hydrogen H3]] It is normally encountered as a Gas with a characteristic pungent Odor Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the Nitrogen (ˈnaɪtɹəʤɪn is a Chemical element that has the symbol N and Atomic number 7 and Atomic weight 14 Phosphine is the common name for phosphorus hydride (PH3 also known by the IUPAC name phosphane and occasionally phosphamine. Arsine is the chemical compound with the formula As[[hydrogen H]]3 Methane is a Chemical compound with the molecular formula. It is the simplest Alkane, and the principal component of Natural gas. Carbon dioxide ( Chemical formula:) is a Chemical compound composed of two Oxygen Atoms covalently bonded to a single Carbon monoxide, with the chemical formula CO is a colorless odorless tasteless yet highly toxic Gas. Hydrogen sulfide (or hydrogen sulphide) is the Chemical compound with the formula H 2 S. Vinylacetylene or butenyne is the Organic compound with the formula C4H4 Diacetylene (also known as butadiyne) with the formula C4H2 is a highly unsaturated Hydrocarbon that contains one Single bond An allene is a Hydrocarbon in which one atom of Carbon is connected by double bonds with two other atoms of carbon Methylacetylene ( propyne) is an Alkyne with the Chemical formula H 3C≡CH

Fire hazard

Mixtures with air containing between 3% and 82% acetylene are explosive on ignition. The minimum ignition temperature is 335 °C. ^[5] The carbon-carbon triple bond of acetylene is weak compared to the carbon-oxygen double bonds that are formed in its combustion to form carbon dioxide, causing this combustion to be extremely energetic.

Incompatibilities

• bromine, chlorine, copper, mercury, silver. Chlorine (ˈklɔriːn from the Greek word 'χλωρóς' ( khlôros, meaning 'pale green' is the Chemical element with Atomic number 17 and Copper (ˈkɒpɚ is a Chemical element with the symbol Cu (cuprum and Atomic number 29 Mercury (ˈmɜrkjʊri also called quicksilver or hydrargyrum, is a Chemical element with the symbol Hg ( Latinized hydrargyrum Silver (ˈsɪlvɚ is a Chemical element with the symbol " Ag " (argentum from the Ancient Greek: ἀργήντος - argēntos gen

Other meanings

Sometimes the plural "acetylenes" may refer to the class of organic chemical compounds known as alkynes which contain the -C≡C- group. Alkynes are Hydrocarbons that have at least one Triple bond between two Carbon atoms with the formula CnH2n-2.

Natural occurrence

Acetylene is a moderately common chemical in the universe, often associated with the atmospheres of gas giants. A gas giant (sometimes also known as a Jovian planet after the planet Jupiter, or giant planet) is a large Planet that is not primarily ^[6] One curious discovery of acetylene is on Enceladus, a moon of Saturn. TemplateInfobox Planet.--> This article is about the moon of Natural acetylene is believed to form from either catalytic decomposition of long chain hydrocarbons or at temperatures ≥ 1,770 kelvin. Catalysis is the process in which the rate of a Chemical reaction is increased by means of a Chemical substance known as a catalyst The kelvin (symbol K) is a unit increment of Temperature and is one of the seven SI base units The Kelvin scale is a thermodynamic Since such temperatures are highly unlikely on such a small distant body, this discovery is potentially suggestive of catalytic reactions within the moon, making it a promising site to search for prebiotic chemistry. ^[7][8]

References

External links

• Acetylene at Chemistry Comes Alive!
• Acetylene, the Principles of Its Generation and Use, available at Project Gutenberg. Project Gutenberg, abbreviated as PG, is a volunteer effort to Digitize, archive and distribute Cultural works

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