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|Hazard Class :||2.1||Beilstein Reference:||969129|
|CAS No.:||106-97-8||EINECS No.::||203-448-7|
|Purity::||99.999%||Package::||Welding Steel Cylinders|
|Other Names:||A-17;Bu-Gas;butane(liquefiedgas);butane(non-specificname);Butanen;Butani;butylhydride; 600||Appearance::||Colorless Liquefied Gas|
|Cylinders Volume::||500L||Grade Standard:||Electron Grade Industrial Grade|
|Toxic:||Toxic||Application:||Organic Synthesis And Ethylene Production, Fuels, Solvents, Refrigerants, Standard Gas, School Righteousness, Smoke Agent, The Standard Steam Atmospheric Pressure Table, Ionizing Particle Counter Jet.|
|Flammability Range (in Air):||Highly Flammable||UN Number:||1011|
|Chemical Formula:||C4H10||Odor:||Unpleasant Odor,Gasoline-like Or Natural Gas-like|
Butyl Hydride Organic Gases C4H10 Toxic Organic Compounds UN 1011
Organic Gases Butane is an organic compound with the formula C4H10 that is an alkane with four carbon atoms. Butane is a gas at room temperature and atmospheric pressure. The term may refer to either of two structural isomers, n-butane or isobutane (or "methylpropane"), or to a mixture of these isomers. In the IUPAC nomenclature, however, "butane" refers only to the n-butane isomer (which is the isomer with the unbranched structure). Butanes are highly flammable, colorless, easily liquefied gases. The name butane comes from the roots but- (from butyric acid) and -ane.
N-BUTANE is a colorless gas with a faint petroleum-like odor. For transportation N-BUTANE may be stenched
N-BUTANE is shipped as a liquefied gas under its vapor pressure. Contact with the liquid can cause frostbite.
N-BUTANE is easily ignited. Its vapors are heavier than air. Any leak can be either liquid or vapor. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.
N-BUTANE is used as a fuel, an aerosol propellant, in cigarette lighters, and to make other chemicals.
1. Physical properties
|PHYSICAL AND CHEMICAL PROPERTIES|
|Appearance||colorless gas||Physical State||gas|
|Odor Threshold||6.16 ppm||pH||Not available|
|Melting Point||-138 °C (-216 °F )||Boiling Point||-1 °C (30 °F )|
|Freezing point||Not available||Evaporation Rate||Not available|
|Boiling Point Range||Not available||Flammability (solid, gas)||Not available|
|Autoignition||287 °C (549 °F )||Flash Point||-60 °C Closed Cup (-76 °F )|
|Lower Explosive Limit||1.9 %||Decomposition temperature||Not available|
|Upper Explosive Limit||8.5 %||Vapor Pressure||557 mmHg at 20 °C|
|Vapor Density (air=1)||2.1||Specific Gravity (water=1)||0.5788 at 0 °C|
|Water Solubility||15 %||Partition coefficient: noctanol/water||Not available|
|Viscosity||Not available||Solubility (Other)||Not available|
|Henry's Law Constant||0.0007938 atmm3/mole||KOC||900 (Estimate )|
2. Safety Data Sheet
|Material Name: N-BUTANE SDS ID: MAT15370|
|Log KOW||2.89||Physical Form||gas|
|Molecular Formula||C-H3-(C-H2)2-C-H3||Molecular Weight||58.12|
3. Component Exposure Limits
|ACGIH:||1000 ppm STEL|
|NIOSH:||800 ppm TWA ; 1900 mg/m3 TWA|
|Mexico:||800 ppm TWA LMPE-PPT ; 1900 mg/m3 TWA LMPE-PPT|
Normal butane can be used for Organic Synthesis , Ethylene Production , Fuels ,and gasoline blending, as a fuel gas, either alone or in a mixture with propane, and as a feedstock for the manufacture of ethylene and butadiene, a key ingredient of synthetic rubber. Isobutane is primarily used by refineries to enhance (increase) the octane number of motor gasoline.
When blended with propane and other hydrocarbons, it may be referred to commercially as LPG, for liquefied petroleum gas. It is used as a petrol component, as a feedstock for the production of base petrochemicals in steam cracking, as fuel for cigarette lighters and as a propellant in aerosol sprays such as deodorants.
Very pure forms of butane, especially isobutane, can be used as refrigerants and have largely replaced the ozone-layer-depleting halomethanes, for instance in household refrigerators and freezers. The system operating pressure for butane is lower than for the halomethanes, such as R-12, so R-12 systems such as in automotive air conditioning systems, when converted to butane will not function optimally.
Butane cylinder for use in a camping stove.
Butane is also used as lighter fuel for a common lighter or butane torch and is sold bottled as a fuel for cooking and camping. In this form it is often mixed with small amounts of hydrogen sulfide and mercaptans which will give the unburned gas an offensive smell easily detected by the human nose. In this way, butane leaks can easily be identified. While hydrogen sulfide and mercaptans are toxic, they are present in levels so low that suffocation by the butane becomes a concern far before toxicity. Most commercially available butane also contains a certain amount of contaminant oil which can be removed through filtration but which will otherwise leave a deposit at the point of ignition and may eventually block the uniform flow of gas.
Cordless hair irons are usually powered by butane cartridges