Butane

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Butane
Identifiers
CAS number 106-97-8 YesY
PubChem 7843
ChemSpider 7555 YesY
UNII 6LV4FOR43R YesY
EC nummer 203-448-7
UN nummer 1011
KEGG D03186 YesY
MeSH butane
ChEBI CHEBI:37808 YesY
ChEMBL CHEMBL134702 YesY
RTECS nummer EJ4200000
Beilstein Reference 969129
Gmelin Reference 1148
Jmol-3D images Image 1
Properties
Molecular formula C4H10
Molar mass 58.12 g mol−1
Appearance Colourless gas
Odor Petrol-like
Density 2.48 g dm−3 (at 15 °C)
Meltin pynt

-140--134 °C, 133-139 K, -220--209 °F

Boilin pynt

-1-1 °C, 272-274 K, 30-34 °F

Solubility in water 61 mg L−1 (at 20 °C)
log P 2.745
Vapor pressure ~25 PSI (at 50 °F) [2]
kH 11 nmol Pa−1 kg−1
Thermochemistry
Std enthalpy o
formation
ΔfHo298
−126.3–−124.9 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−2.8781–−2.8769 MJ mol−1
Speceefic heat capacity, C 98.49 J K−1 mol−1
Hazards[3]
GHS pictograms The flame pictogram in the Globally Harmonized Seestem o Classification an Labelling o Chemicals (GHS)
GHS signal wird DANGER
GHS hazard statements H220
GHS precautionary statements P210
EU Index 601-004-00-0
EU classification Flammable F+
R-phrases R12
S-phrases (S2) S16
NFPA 704
NFPA 704.svg
4
1
0
Flash pynt −60 °C (−76 °F)
Autoigneetion
temperatur
288 °C (550 °F)
Explosive leemits 1.8–8.4%
Related compounds
Relatit alkanes
Relatit compoonds Perfluorobutane
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Butane is an organic compoond wi the formula C4H10 that is an alkane wi fower carbon atoms. Butane is a gas at ruim temperatur an atmospheric pressur. The term mey refer tae either o twa structural isomers, n-butane or isobutane (or "methylpropane"), or tae a mixtur o these isomers. In the IUPAC nomenclatur, however, "butane" refers anly tae the n-butane isomer (which is the isomer wi the unbranched structur). Butanes are heichly flammable, colourless, easily liquefied gases. The name butane comes frae the ruits but- (frae butyric acid) an -ane.

References[eedit | eedit soorce]

  1. PubChem 7843
  2. W. B. Kay. "Pressure-Volume-Temperature Relations for n-Butane". Standard Oil Company. 
  3. "Safety Data Sheet, Material Name: N-Butane" (PDF). USA: Matheson Tri-Gas Incorporated. 5 February 2011. Retrieved 11 December 2011. 

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