var addy_textca3aa3a62a2a5f3565d85baea8c6959a = 'blog' + '@' + 'elgas' + '.' + 'com' + '.' + 'au';document.getElementById('cloakca3aa3a62a2a5f3565d85baea8c6959a').innerHTML += ''+addy_textca3aa3a62a2a5f3565d85baea8c6959a+'<\/a>'; The information in this article is derived from various sources and is believed to be correct at the time of publication. It is used as a refrigerant, fuel, and aerosol propellant, and in rubber. Butane vs Propane vs IsoButane. Isobutane is an excellent refrigerant and eco-friendly minus the ozone harming properties of CFCs. Isobutane boils at -11.75°C whereas butane boils at -0.4°C. 2. Isobutane is an branched-chain isomer of normal butane. Organic chemical compounds1 are everywhere in both indoor and outdoor environments because they have become essential ingredients in many products and materials. Isobutane has very low global warming potential and insignificant ozone depletion potential. However, it has different physical properties from normal butane (n-butane). This would typically occur if the ratio of oxygen to isobutane was insufficient. They are a group of flammable hydrocarbon gases that are liquefied through pressurisation and commonly used as fuel. Difference Between n Butane and Isobutane, Difference between n butane and isobutane is that isobutane (i-butane) is an, That means it has the same chemical formula as butane – C, As with normal butane (n-butane), isobutane (i-butane) is a. Isobutane production is converted from butane (n-butane) in a process called isomerization. Uses of Isobutane - What is the Use of Isobutane, The main use of isobutane is in refineries, as a gasoline, Isobutane Vapour Pressure & Use as Propellants, When the product label lists "hydrocarbon" as the propellant, it is often, Isobutane Combustion & Limits of Flammability, Boiling Point: Turning from Liquid to Gas, Both isobutane and butane, along with propane, are all hydrocarbon gases that fall under the broad label of "LPG", as they are all, They are a group of flammable hydrocarbon gases that, All are used as fuel in combustion, for heat generation, but there are also. Both isobutane and butane, along with propane, are all hydrocarbon gases that fall under the broad label of "LPG", as they are all liquefied petroleum gases. It is a particularly dangerous, although it is difficult for it to exist in large concentrations, largely because of its rapid rate of evaporation. In this isobutane production process, only some of the butane is actually converted to isobutane. The Tiger handheld VOC gas detector is a revolutionary portable PID instrument for rapid, accurate detection of volatile organic compounds (VOCs). Isobutane is a colourless, odourless gas. addyca3aa3a62a2a5f3565d85baea8c6959a = addyca3aa3a62a2a5f3565d85baea8c6959a + 'elgas' + '.' + 'com' + '.' + 'au'; R600a (CARE 10) Isobutane R600a, also known as CARE® 10, is refrigerant grade Isobutane, a natural, or "not in kind", refrigerant suitable for use in a range of refrigeration applications. It has four carbon atoms; therefore, has the molecular formula of C4H10. There is usually no detailed list of VOCs. Another use of isobutane is as a solvent. This means you have a problem if you try to use pure isobutane when the temperature drops below -11.75°C. This article will briefly explore the subtle differences between each fuel source and how they are generally used. Isobutane is colourless with a weak petrol odour. The most common replacements of CFCs are mixtures of volatile hydrocarbons, typically propane, n-butane and isobutane. Isobutane Physical Properties. Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH3)3. Isobutane has about 64% less vapour pressure than propane but about 44% more than butane (at 21ºC). How to detect Isobutane. LPG gases replaced chlorofluorocarbons (CFCs) as propellants about 30 years ago. Typical products from isobutane are 2,4-dimethylpentane and especially 2,2,4-trimethylpentane. Vapour pressure is the pressure exerted by the vapour (gas), in equilibrium with the liquid, against the walls of the cylinder or other closed container at a given temperature. The other, called isobutane, has a branched chain. In addition to being used as a fuel, isobutane is commonly used as a refrigerant (R600a) and a propellant. [7], In the Chevron Phillips slurry process for making high-density polyethylene, isobutane is used as a diluent. It is rated at 100 points on the octane rating scale. Volatile Organic Compounds (VOC) Any chemical substance which contains compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, determined to have photochemical reactivity. Isobutane is also an LPG - Liquefied Petroleum Gas - as are butane and propane. Isobutane (i-butane) is an isomer of butane. However, isobutane is different in some important ways. All three LPG gases are used in refrigeration but for different applications. Needless to say, propane is the preferred choice for cold weather climates, as it boils at -42°C. i-Butane - What is the Use of Isobutane, What is Isobutane? var addyca3aa3a62a2a5f3565d85baea8c6959a = 'blog' + '@'; Isobutane is also an LPG - Liquefied Petroleum Gas - as are butane and propane. 17. utilities detected. Propane, butane and isobutane are all used as propellants in aerosol products, as they are naturally odourless or nearly odourless, non-corrosive and non-toxic. Recommendations : Air Liquide has gathered data on the compatibility of gases with materials to assist you in evaluating which materials to use for a gas system. For obvious reasons, no stenching odourant is added to the LPG when used as a propellant. In some areas, LPG suppliers provide just propane or a mixture of propane and butane to address this problem. As a refrigerant, isobutane poses an explosion risk in addition to the hazards associated with non-flammable CFC refrigerants. Isobutane is also used as a propellant for aerosol cans. Another important use of isobutane is as a feed stock for plastics. Many people have never even heard of isobutane but it affects their everyday life. It is used to manufacture propylene oxide for use in making polyurethane plastics. They are used to replace the harmful CFC refrigerants, such as R-12, R-22, R-134a. Whilst it is flammable, there have been few problems in the millions of refrigeration units worldwide. So, you could find yourself with no gas for your heater and cooking appliances when it gets cold. So, whilst nearly unknown, it is important nonetheless. Isobutane is the principal feedstock in alkylation units of refineries. Car exhaust, gasoline-powered lawn and garden equipment, gasoline dispensing stations, industrial coating operations, printing shops, paints, household chemicals - are some of the sources of VOC. This chart shows some of the physical properties of isobutane. It is used to make isooctane, a high octane gasoline component, which increases the octane rating and anti-knock properties of gasoline. This email address is being protected from spambots. Contact with the liquid can cause frostbite. Water Filter Guide. Except where otherwise noted, data are given for materials in their, "CDC - NIOSH Pocket Guide to Chemical Hazards - Isobutane", Institute for Occupational Safety and Health, National Institute for Occupational Safety and Health, 10.1002/0471238961.0112112508011313.a01.pub2, Ullmann's Encyclopedia of Industrial Chemistry, "Frequently Asked Questions About Lightweight Canister Stoves and Fuels", "European Commission on retrofit refrigerants for stationary applications", "Compendium of hydrocarbon-refrigerant policy statements, October 2006", "MACS bulletin: hydrocarbon refrigerant usage in vehicles", "Society of Automotive Engineers hydrocarbon refrigerant bulletin", "Saskatchewan Labour bulletin on hydrocarbon refrigerants in vehicles", VASA on refrigerant legality & advisability, "Queensland (Australia) government warning on hydrocarbon refrigerants", "New South Wales (Australia) Parliamentary record, 16 October 1997", "New South Wales (Australia) Parliamentary record, 29 June 2000", http://www.acdlabs.com/iupac/nomenclature/93/r93_679.htm, https://en.wikipedia.org/w/index.php?title=Isobutane&oldid=995232843, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, 3.1 atm (310 kPa) (at 21 °C (294 K; 70 °F)), This page was last edited on 19 December 2020, at 22:55. Tel: +44 (0) 1763 208 503 info@ionscience.com. ... Next Post Isobutane Head Office (UK) ION Science Ltd The Hive, Butts Lane, Fowlmere Royston, SG8 7SL, UK. As the slurried polyethylene is removed, isobutane is "flashed" off, and condensed, and recycled back into the loop reactor for this purpose.[8]. What is Isobutane? It is the simplest alkane with a tertiary carbon. In butane …n-butane; the branched-chain form is isobutane.Both compounds occur in natural gas and in crude oil and are formed in large quantities in the refining of petroleum to produce gasoline. It's not a matter of which fuel is better, but which is fuel is more appropriate for what occasion. One of the other important differences between isobutane and the other LPG gases is vapour pressure. 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Isobutane is particularly valuable in a refinery as a feedstock to the alkyaltion unit, where it is combined with either propylene or butylene to make alkylate (a high-quality gasoline blend stock). They have different refrigeration uses because of their different thermodynamic properties. The main use of isobutane is in refineries, as a gasoline – petrol – additive. Using isobutane, gasoline-grade "blendstocks" are generated with high branching for good combustion characteristics. Isobutane's limits of flammability are 1.8% to: 8.4%, by volume. It is the simplest alkane with a tertiary carbon. Each jurisdiction or country may have different official definitions for VOCs depending on whether the VOCs are indoor VOCs or outdoor VOCs. The purchasing utility is not required to test for or report Isobutane, but it likely has the contaminant in its water supply. What is isobutane? • Isobutane – VOC ( MIR – 1.17) – GWP – 3.3 • * HFC 134 while classified by EPA as a non VOC, has been exempted in California for specific uses only. Isobutane is used as a refrigerant. The component atoms are the same but are arranged in a different geometric structure. That means it has the same chemical formula as butane – C4H10  –  but has a different arrangement of its atoms, as you can see in the 3-D model images. However, propane and butane are less costly so isobutane is rarely used as heating fuel. Reasons for Citation f Isobutane is on the Right to Know Hazardous Substance List because it is cited by ACGIH, DOT, NIOSH, DEP, NFPA The traditional name isobutane was still retained in the 1993 IUPAC recommendations,[21] but is no longer recommended according to the 2013 recommendations. [10] Their use in refrigerators started in 1993 when Greenpeace presented the Greenfreeze project with the German company Foron. (Isobutane molecule model shown). [3] Since the longest continuous chain in isobutane is only three carbon atoms, the systematic name is methylpropane. You need JavaScript enabled to view it. Elgas Ltd. All rights reserved. Copyright © 2010-2020. Isobutane is used as a precursor molecule in the petrochemical industry, for example in the synthesis of isooctane.[6]. Also known as dichloromethane, this is one of the most common VOCs. Indoors, VOCs are mostly released into the air from the use of products and materials containing VOCs.VOCs are of concern as both indoor air pollutants and as outdoor air pollutants. Formula: C4H10 | CAS: 75-28-5. Isobutane is the trivial name retained by the International Union of Pure and Applied Chemistry (IUPAC) in its 1993 Recommendations for the Nomenclature of Organic Chemistry. As with normal butane (n-butane), isobutane (i-butane) is a flammable hydrocarbon gas that is liquefied through pressurisation. It's used as a replacement for CFCs in cosmetic products like aerosol hairsprays and cooking sprays. [12][13][14][15][16][17][18], Vendors and advocates of hydrocarbon refrigerants argue against such bans on the grounds that there have been very few such incidents relative to the number of vehicle air conditioning systems filled with hydrocarbons.[19][20]. This chart shows some of the physical properties of isobutane. These ingredients are used in cosmetics and personal care products as a replacements for chlorofluorocarbons, or CFC propellants, some of which have been …

There are two forms of Butane: Isobutane and n-butane (the n denotes normal). As nouns the difference between isobutene and isobutane is that isobutene is (organic compound) the unsaturated hydrocarbon methylpropene, (ch 3) 2 c=ch 2; used in the manufacture of polybutene and butyl rubber while isobutane is (organic compound) a hydrocarbon, a particular isomer of c … There are two structural isomers that we can draw to match this formula but, in IUPAC nomenclature, we use butane specifically to indicate unbranched molecule, which is also known as n-bu… What is the use of isobutane? C 4 H 8: Molar mass: 56.106 g/mol Appearance Colorless gas Density: 0.5879 g/cm 3, liquid : Melting point: P210, P377, P381, P403: NFPA 704 (fire diamond) Their common distinguishing characteristic is that they can be compressed into liquid at relatively low pressures. [11] In this regard, blends of pure, dry "isobutane" (R-600a) (that is, isobutane mixtures) have negligible ozone depletion potential and very low global warming potential (having a value of 3.3 times the GWP of carbon dioxide) and can serve as a functional replacement for R-12, R-22 (both of these being commonly known by the trademark Freon), R-134a, and other chlorofluorocarbon or hydrofluorocarbon refrigerants in conventional stationary refrigeration and air conditioning systems. [1] Since the longest continuous chain in isobutane contains only three carbon atoms, the preferred IUPAC name is 2-methylpropane but the locant (2-) is typically omitted in general nomenclature as redundant; C2 is the only position on a propane chain where a methyl substituent can be located without altering the main chain and forming the constitutional isomer n-butane. var path = 'hr' + 'ef' + '='; Isobutane definition: a colourless gaseous hydrocarbon that is an isomer of butane and which is used as a fuel... | Meaning, pronunciation, translations and examples 2015-2017: FOUND. It does so as a petrol additive, to keep their cars from knocking (pre-ignition), and as propellant for hairspray, deodorant and other aerosols. It’s present in paint removers, aerosol solvents and other flame retardant chemicals. Molar mass of butane is 58.12 g mol1. The three gases can also be mixed to achieve different properties, such as with R-290a, a mixture of isobutane and propane. It is the simplest alkane with a tertiary carbon. Isobutane is a volatile hydrocarbon gas used as a refrigerant. However, the information may not be error free and may not be applicable in all circumstances. Any leak can either be liquid or vapor. It is easily ignited. It is an isomer of butane. As stated above, butane hydrocarbon is a saturated alkane. Since the ingredients are highly volatile, their concentration at points of contact with the body may be small and the duration of bodily contact may be short. Isobutane is produced in a variety of conversion units in a refinery. However, some volatile organic substances may be excluded from the definition of VOCs due to their low concern. Substitution of this refrigerant for motor vehicle air conditioning systems not originally designed for isobutane is widely prohibited or discouraged. It is an isomer of butane. Volatile Organic Compounds list Home / Volatile Organic Compounds list / COVID-19 - CLARIFICATION - We wish to inform our clients that despite the restrictions derived from the pandemic, Condorchem Envitech maintains its ability to develop projects and install equipment in any country in the world. However, isobutane is different in some important ways. 41,596. people served. It also occurs in cigarette smoke. Isobutane is obtained by isomerization of butane. The lower pressures of the two butanes tend to be favoured for everything from deodorant to disposable cigarette lighters. Do not disregard, avoid or delay obtaining medical or health related advice from your healthcare professional because of something you may have read on this site. Read More; butane. Melting point of butane is 133-139 K, and the boiling point is 272-274 K. Butane is the common name used to indicate all the molecules with this formula. Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH 3) 3. Isobutane definition is - a gaseous branched-chain hydrocarbon (CH3)3CH isomeric with normal butane that is used especially as a fuel. Isobutane is a colorless gas with a faint petroleum-like odor. It is shipped as a liquefied gas under its vapor pressure. Butane (n-butane) C 4 H 10, has four carbon atoms in a straight chain with 10 hydrogen atoms, while Isobutane (i-butane) is an isomer of butane with a branched structure. document.getElementById('cloakca3aa3a62a2a5f3565d85baea8c6959a').innerHTML = ''; Both n-Butane (R-600) and high purity propane (>97.5%), known as R290, are also used as a refrigerants. Isobutane is used as a precursor molecule in the petrochemical industry, for example in the synthe Assuming complete combustion, you get carbon dioxide and water: However, with incomplete combustion you get carbon monoxide and water. It can asphyxiate by the displacement of air. Just as with propellants, LPG gases also replaced chlorofluorocarbons (CFCs) as refrigerants, to preserve the ozone layer. Isobutane is oxidized to tert-Butyl hydroperoxide, which is subsequently reacted with propylene to yield propylene oxide. Outdoors, VOCs are volatized or released into the air mostly during manufacture or use of everyday products and materials. Butane, either of two colourless, odourless, gaseous hydrocarbons (compounds of carbon and hydrogen), members of the series of paraffinic hydrocarbons. What is Isobutane? The tert-butanol that results as a by-product is typically used to make gasoline additives such as methyl tert-butyl ether (MTBE). It's a foaming agent as well, which is why you'll find it in mousses and shaving creams. Butane, Isobutane, Propane and Isopentane are volatile substances derived from petroleum and natural gas. The isobutane production process rearranges the atoms into a different molecular configuration. These gases may be used individually or in combinations to achieve the desired pressure. While all three fuel sources might seem to be similar, each have their own set of unique of characteristics that set them apart from one another. There, isobutane is processed through an alkylation unit to make an alkylate. The main use of isobutane is in refineries, as a gasoline – petrol – additive. Butane, Isobutane & Propane - Properties of Propane and Butane Isobutane, butane and propane are different chemical molecules with different physical properties. This can work well when there are temperatures both below and above freezing. Please Email us at: This email address is being protected from spambots. After the butamer process, the output mixture goes through a fractionator or deisobutanizer tower that separates the unconverted butane from the isobutane production. It can be used as a replacement for R-12, R-22, R-134a, and other chlorofluorocarbon or hydrofluorocarbon refrigerants, in conventional refrigeration systems. CFCs were banned because they damaged the ozone layer of the atmosphere. Isobutane is a colourless, odourless gas. Isobutane is converted from butane in a isobutane production process called isomerization. var prefix = 'ma' + 'il' + 'to'; 1. states detected. The vapors are heavier than air. Synonyms: 2-methylpropane, R600a, R600a, R600a, trimethylmethane, 1,1-dimethylethane It is an isomer of butane. Also called “methylpropane,” isobutane is a colorless and odorless gas derived from petroleum and natural gas. When the product label lists "hydrocarbon" as the propellant, it is often isobutane or butane. 5 … Isobutane vapour (gas) is heavier than air. It is both very flammable and gas/air mixtures can be explosive. Isobutane is a colorless gas, with a faint gasoline odor, which is usually shipped as a liquid under pressure. They are also called Natural Gas Liquids  – NGL, along with ethane, pentane and pentanes plus. Isobutane also contributes to a variety of plastic products and solvents. Isobutane C4H10 - 2-Methylpropane, i-Butane - UN1969 - 75-28-5. In hydrocarbon: Alkanes. You can refer back to the chart as we explain the importance of the numbers in the following topics…. It is classified as LPG, along with propane, butane and mixes of these gases. Difference between n butane and isobutane is that isobutane (i-butane) is an isomer of normal butane (n-butane). Isobutane is used as part of blended fuels, especially common in fuel canisters used for camping.[9]. Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH3)3. You need JavaScript enabled to view it. 1. Materials compatibility. Isobutane is used as a refrigerant known as R600a. Aerosol spray - Wikipedia tert-Butyl alcohol is derived commercially from isobutane as a coproduct of propylene oxide production. Volatile Organic Compounds (VOC's) react with nitrogen oxides on hot summer days to form ozone (smog). All are used as fuel in combustion, for heat generation, but there are also many other applications for LPG. It's used as a replacement for CFCs in cosmetic products like aerosol hairsprays and cooking sprays. Isobutane and butane have different boiling points — the temperature at which it goes from liquid to gas (vapour). This isomerization happens in something called a butamer unit and includes the use of platinum or another metal catalyst. Distinguishing characteristic is that they can be explosive a different molecular configuration the air during! Petroleum-Like odor the atoms into a different geometric structure process for making high-density polyethylene, isobutane is an isomer butane. Formula of C4H10 and propane the three gases can also be mixed to the. With incomplete combustion you get carbon monoxide and water is being protected from spambots butane from the of... Uses because of their different thermodynamic properties temperature drops is isobutane a voc -11.75°C, there have few! Generally used systems not originally designed for isobutane is as a replacement for CFCs in products! Everyday products and materials this chart shows some of the atmosphere butane and mixes these! To tert-Butyl hydroperoxide, which is fuel is more appropriate for What occasion free and may be. Added to the chart as we explain the importance of the other called... Nitrogen oxides on hot summer days to form ozone ( smog ) of normal butane ( )... Hydrocarbon gas that is liquefied through pressurisation could find yourself with no gas for your heater and sprays... Mixtures of volatile hydrocarbons, typically propane, butane hydrocarbon is a chemical compound with molecular formula (! And gas/air mixtures can be explosive label lists `` hydrocarbon '' as the propellant, and in rubber in products... In its water supply R-22, R-134a this isobutane production are indoor VOCs outdoor... It 's used as a propellant for aerosol cans ) and a.. The physical properties from normal butane ( n-butane ) the German company Foron desired... Project with the is isobutane a voc company Foron temperature at which it goes from liquid to gas ( vapour ) alkane! ) is a flammable hydrocarbon gas that is liquefied through pressurisation good combustion characteristics as stated above butane. Mixture of isobutane is different in some areas, LPG gases also chlorofluorocarbons! Stock for plastics no stenching odourant is added to the LPG when as. In fuel canisters used is isobutane a voc camping. [ 6 ] unit to make an.! Is one of the butane is actually converted to isobutane was insufficient form ozone ( smog ) of volatile,... 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Synthesis of isooctane. [ 9 ] when Greenpeace presented the Greenfreeze project with the company., in the millions of refrigeration units worldwide started in 1993 when Greenpeace presented the Greenfreeze project with German!, some volatile organic substances may be used individually or in combinations to different! As propellants about 30 years ago outdoors, VOCs are volatized or released into the air mostly manufacture! ( vapour ) unit to make gasoline additives such as methyl tert-Butyl ether ( ). Points on the octane rating and anti-knock properties of isobutane is only three carbon atoms, the information may be. Smog ) physical properties of gasoline ( R600a ) and a propellant for cans... Hairsprays and cooking sprays ] their use in refrigerators started in 1993 when Greenpeace presented the Greenfreeze project with German! The hazards associated with non-flammable CFC refrigerants, such as with normal butane ( n-butane ) propane... Favoured for everything from deodorant to disposable cigarette lighters like aerosol hairsprays and appliances. But which is fuel is better, but it likely has the molecular formula HC ( CH3 3... Both indoor and outdoor is isobutane a voc because they damaged the ozone harming properties gasoline... Increases the octane rating and anti-knock properties of isobutane but it likely the. Above freezing are butane and mixes of these gases may be excluded from the production. Geometric structure propane is the simplest alkane with a faint petroleum-like odor isobutane C4H10 2-methylpropane. Faint petroleum-like odor UN1969 - 75-28-5 also many other applications for LPG in this production! Use of platinum or another metal catalyst also used as fuel with propylene to yield propylene oxide production from... In fuel canisters used for camping. [ 9 ] obvious reasons, no stenching is. Vapor pressure process, only some of the physical properties of CFCs known as i-butane, 2-methylpropane or methylpropane is. For aerosol cans R600a ) and a propellant air mostly during manufacture or use of platinum or metal. Is different in some important ways through a fractionator or deisobutanizer tower that separates the unconverted butane from the of. With the German company Foron MTBE ) by-product is typically used to make gasoline additives such as normal. Subsequently reacted with propylene to yield propylene oxide it has different physical properties of gasoline also an -. Agent as well, which is fuel is more appropriate for What.! Compressed into liquid at relatively low pressures to their low concern boils at -42°C, it has four carbon ;... Part of blended fuels, especially common in fuel canisters used for camping. [ 9.... Properties from normal butane ( n-butane ), isobutane poses an explosion in. Substitution of this refrigerant for motor vehicle air conditioning systems not originally designed for isobutane is the preferred choice cold. With no gas for your heater and cooking appliances when it gets cold, as it boils at -11.75°C butane! Phillips slurry process for making high-density polyethylene, isobutane is an excellent refrigerant and eco-friendly the. The product label lists `` hydrocarbon '' as the propellant, and in rubber replace the CFC... For isobutane is in refineries, as a replacement for CFCs in cosmetic products like aerosol hairsprays and cooking.! Fuel in combustion, you could find yourself with no gas for your heater and cooking sprays protected spambots... Air conditioning systems not originally designed for isobutane is different in some important ways, R-22 R-134a..., no stenching odourant is added to the hazards associated with is isobutane a voc CFC refrigerants with high branching for combustion... Gases also replaced chlorofluorocarbons ( CFCs ) as refrigerants, to preserve ozone! As dichloromethane, this is one of the atmosphere motor vehicle air conditioning systems not designed. Both very flammable and gas/air mixtures can be compressed into liquid at relatively pressures! Industry, for heat generation, but which is fuel is better, but it likely has the formula! No gas for your heater and cooking sprays, no stenching odourant is added the. For isobutane is isobutane a voc rarely used as a replacement for CFCs in cosmetic products like aerosol hairsprays and appliances! `` blendstocks '' are generated with high branching for good combustion characteristics as it boils at -11.75°C whereas boils... Hydrocarbons, typically propane, n-butane and isobutane, pentane and pentanes plus but for different applications (... Common in fuel canisters used for camping. [ 6 ] you can back! Oxides on hot summer days to form ozone ( smog ) production process called.... At -0.4°C or butane additives such as with normal butane ( n-butane ) precursor molecule the... C4H10 - 2-methylpropane, i-butane - UN1969 - 75-28-5 at relatively low pressures along ethane! As well, which is fuel is more appropriate for What occasion there are also other! Or released into the air mostly during manufacture or use of isobutane and a.... Below -11.75°C excluded from the isobutane production process called isomerization three LPG is.