Butane - meaning of word
Rozmiar: 8938 bajtów


Butane



{| align="right" width="300" border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse" |- style="border-top: 3px solid gray" ! bgcolor="#ffddaa" colspan="2" | General |- | IUPAC nomenclature || Butane
''n''-butane |- | bgcolor="#ffeedd" | Chemical formula | CarbonHydrogen3(CarbonHydrogen2)2CarbonHydrogen3 |- | bgcolor="#ffeedd" | Molecular weight | 58.1 g/mol |- | bgcolor="#ffeedd" | CAS number | 106-97-8 |- | bgcolor="#ffeedd" | MSDS | Wikisource: MSDS |- ! bgcolor="#ffddaa" colspan="2" | Physical properties |- | bgcolor="#ffeedd" | pH (10% solution with water) | 7.0 |- ! bgcolor="#ffddaa" colspan="2" | Phase behavior |- | bgcolor="#ffeedd" | Melting point | -138.3 °C (134.9 K) |- | bgcolor="#ffeedd" | Boiling point | -0.5 °C (272.7 K) |- | bgcolor="#ffeedd" | Heat of vaporization
vapH) | 21 kJ/mol |- ! bgcolor="#ffddaa" colspan="2" | Safety |- | bgcolor="#ffeedd" | Flash point | -60 °C |- ! bgcolor="#ffeedd" colspan="2" | Precautions |- | colspan="2" | * Hazards: ** Extremely flammable * Personal protection: ** ? * Reacts with: ** ? * Storage: ** Keep container in a well ventilated place |- ! bgcolor="#ffddaa" colspan="2" | Gas properties |- | bgcolor="#ffeedd" | ΔfH0gas | -126 kJ/mol |- | bgcolor="#ffeedd" | S0gas | 310 J/mol·K |- | bgcolor="#ffeedd" | Cp | 97 J/mol·K |- | height="50" colspan=2 | |- ! bgcolor="#ffddaa" colspan="2" | General |- | IUPAC nomenclature || 2-methylpropane
Isobutane |- | bgcolor="#ffeedd" | Chemical formula | CarbonHydrogen3CarbonHydrogen(CarbonHydrogen3)2 |- | bgcolor="#ffeedd" | Molecular weight | 58.1 g/mol |- ! bgcolor="#ffddaa" colspan="2" | Phase behavior |- | bgcolor="#ffeedd" | Melting point | -159.6 °C (113.6 K) |- | bgcolor="#ffeedd" | Boiling point | -11.7 °C (261.5 K) |- | bgcolor="#ffddaa" colspan="2" align="center" | Except where noted, all data was produced under conditions of standard temperature and pressure. |} Butane, also called '''''n''-butane''', is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3. ''Butane'' is also used as a collective term for ''n''-butane together with its only other isomer, '''''iso''-butane (also called ''i''-butane, isobutane, or 2-methylpropane'''), CH3CH(CH3)2. Butanes are highly flammable, colorless, easily liquefy gases. ==Chemical structure== ''n''-Butane has the following chemical structure: H H H H | | | | H - C - C - C - C - H | | | | H H H H Isobutane, on the other hand, has a branched-chain structure: == Reactions and uses == When air is plentiful, butane burns to form carbon dioxide and steam: :butane + oxygen -> carbon dioxide + steam When air is limited, carbon (soot) or carbon monoxide may also be formed. Butane gas is sold bottled as a fuel for cooking and camping, in which case it is referred to commercially as Liquified_petroleum_gas, or, in the UK, ''calor gas''. It is also 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. Recent concerns with depletion of the ozone layer by freon gases have led to increased use of isobutane as a gas for refrigeration systems, especially in domestic refrigerators and freezers. When used as a refrigerant, isobutane is also known as R600a. == See also == * Volatile substance abuse == External links == * [http://www.it.swin.edu.au/personal/fwang/Mom/Mom_butane.html ''n''-Butane], [http://www.chm.bris.ac.uk/motm/motm.htm Molecule of the Month]. Alkanes

Butane



It seems Butane is quite lethal when inhaled, can we get something on this plz ---- Perhaps it would have been better to split into one n-butane and one isobutane subpage? : An article this short? it's barely 1 screen in length. we'd just get 2 stubs -- User:Tarquin 20:09 Jan 23, 2003 (UTC) I read something about 'butane abuse'. Who can enligthen the world on this subject? --- Does anyone have a pressure/temperature chart or table for Butane? If so, could it be added to this page? == hair mousse == I wanted 2 c what my hair products contain and found that iso butane is one of the ingredients in a hair mousse bottle. It was listed as no.4. Why so much and what does it really do there??? xxx == origins == It was not clear to me from the artical the origin of the gas, is a modified version of gas from the ground like you cook with or perhaps a petrolium derivative or from another source altoghether? I've found out since its a petroleum (crude oil) derivative in a family called "aliphatic hydrocarbons" basically various combinations of carbon and hydrogen molecules, I think all the articals about the various members the family all very much stand-alone and would be good to see them all standardsed all well as having articals about advantages/disadvantages of butane over propane like butane burns hotter but is not good at cold tempratures


See other meanings of words starting from letter:

B

BA | BC | BD | BE | BF | BG | BH | BI | BJ | BK | BL | BM | BN | BO | BP | BR | BS | BT | BU | BW | BX | BY | BZ |

Words begining with Butane:

Butane
Butane
Butane_Fumes_&_Bad_Cologne
Butane_gas


These materials are based on Wikipedia and licensed under the GNU FDL



YouTube.com videos better site than Turbo Tax 2007
encyklopedia online