Propane

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Propane
Identifiers
CAS number 74-98-6 YesY
PubChem 6334
ChemSpider 6094 YesY
UNII T75W9911L6 YesY
EC nummer 200-827-9
UN nummer 1978
KEGG D05625 YesY
ChEBI CHEBI:32879 YesY
ChEMBL CHEMBL135416 YesY
RTECS nummer TX2275000
Beilstein Reference 1730718
Gmelin Reference 25044
Jmol-3D images Image 1
Properties[2]
Molecular formula C3H8
Molar mass 44.10 g mol−1
Appearance Colourless gas
Odor Odorless
Density 2.0098 mg mL−1 (at 0 °C, 101.3 kPa)
Meltin pynt

-188 °C, 85.5 K, -306 °F

Boilin pynt

-42--42 °C, 230.9-231.11 K, -44--44 °F

Solubility in water 40 mg L−1 (at 0 °C)
log P 2.236
Vapor pressure 853.16 kPa (at 21.1 °C)
kH 15 nmol Pa−1 kg−1
Thermochemistry
Std enthalpy o
formation
ΔfHo298
−105.2–−104.2 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−2.2197–−2.2187 MJ mol−1
Speceefic heat capacity, C 73.60 J K−1 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
EU Index 601-003-00-5
EU classification Flammable F+
R-phrases R12
S-phrases (S2), S16
NFPA 704
NFPA 704.svg
4
1
0
Flash pynt −104 °C
Autoigneetion
temperatur
540 °C
Explosive leemits 2.37–9.5%
Related compounds
Relatit alkanes
Relatit compoonds Diiodohydroxypropane
 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

Propane is a three-carbon 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 containin too much 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.[3] 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.

References[eedit | eedit soorce]

  1. "Propane – Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 27 March 2005. Identification and Related Records. Retrieved 8 December 2011. 
  2. Record o Propane in the GESTIS Substance Database frae the IFA
  3. ASTM D-1835

Freemit airtins[eedit | eedit soorce]