Propane is a three-caurbon alkane wi the molecular formula C
3
H
8
, normally a gas, but compressible tae a transportable liquid. A bi-product o naitural gas processin an petroleum refinin, it is commonly uised as a fuel for ingines, oxy-gas torches, barbecues, portable stoves, an residential central heatin. Propane is ane o a group o liquefied petroleum gases. The ithers include butane, propylene, butadiene, butylene, isobutylene an mixturs thareo.

Propane
Skeletal formula o propane
Skeletal formula o propane wi aw impleecit caurbons shawn, an aw expleecit hydrogens addit
Baw an stick model o propane
Spacefill model o propane
Names
Preferred IUPAC name
Propane[1]
Seestematic IUPAC name
Tricarbane (never recommended[1])
Identifiers
3D model (JSmol)
1730718
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.753
EC Nummer 200-827-9
E nummer E944 (glazin agents, ...)
Gmelin Reference 25044
KEGG
RTECS nummer TX2275000
UNII
UN nummer 1978
Properties[2]
C3H8
Molar mass 44.10 g·mol−1
Appearance Colourless gas
Odour Odorless
Density 2.0098 kg/m3 (at 0 °C, 101.3 kPa)
Meltin pynt −187.7 °C; −305.8 °F; 85.5 K
Bylin pynt −42.25 tae −42.04 °C; −44.05 tae −43.67 °F; 230.90 tae 231.11 K
47mgL−1 (at 0 °C)
log P 2.236
Vapour pressur 853.16 kPa (at 21.1 °C (70.0 °F))
kH 15 nmol Pa−1 kg−1
Magnetic susceptibility -40.5·10−6 cm3/mol
Thermochemistry
Speceefic heat capacity, C 73.60 J K−1 mol−1
Std enthalpy o
formation
ΔfHo298
−105.2–−104.2 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−2.2197–−2.2187 MJ mol−1
Hazards
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
NFPA 704
Flash pynt −104 °C (−155 °F; 169 K)
470 °C (878 °F; 743 K)
Explosive leemits 2.37–9.5%
US heal exposur leemits (NIOSH):
PEL (Permissible)
TWA 1000 ppm (1800 mg/m3)[3]
REL (Recommendit)
TWA 1000 ppm (1800 mg/m3)[3]
IDLH (Immediate danger)
2100 ppm[3]
Relatit compoonds
Relatit alkanes
Relatit compoonds
Diiodohydroxypropane
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Propane containin ower muckle propene (an aa called propylene) is nae suitit for maist vehicle fuels. HD-5 is a specification which establishes a maximum concentration o 5% propene in propane. Propane an ither LP gas specifications are established in ASTM D-1835.[5] Aw propane fuels include an odorant, almaist always ethanethiol, so that fowk can easily smell the gas in case o a leak. Propane as HD-5 wis oreeginally intendit for uise as vehicle fuel. HD-5 is currently bein uised in aw propane applications.

ReferencesEedit

  1. 1.0 1.1 "Front Matter". Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. 2014. p. 4. doi:10.1039/9781849733069-FP001. ISBN 978-0-85404-182-4. Similarly, the retained names ‘ethane’, ‘propane’, and ‘butane’ were never replaced by systematic names ‘dicarbane’, ‘tricarbane’, and ‘tetracarbane’ as recommended for analogues of silane, ‘disilane’; phosphane, ‘triphosphane’; and sulfane, ‘tetrasulfane’.
  2. Record o Propane in the GESTIS Substance Database frae the IFA
  3. 3.0 3.1 3.2 NIOSH Pocket Guide tae Chemical Hazards 0524
  4. GOV, NOAA Office of Response and Restoration, US. "PROPANE - CAMEO Chemicals - NOAA". cameochemicals.noaa.gov.
  5. ASTM D-1835

Freemit airtinsEedit