Pentane

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Pentane
Skeletal formula o pentane
Skeletal formula o pentane wi aw expleecit hydrogens addit
Pentane 3D ball.png
Pentane 3D spacefill.png
Names
Preferred IUPAC name
Pentane
Ither names
Quintane[1]
Identifiers
3D model (JSmol)
969132
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.003.358
EC Nummer 203-692-4
Gmelin Reference 1766
MeSH pentane
RTECS nummer RZ9450000
UNII
UN nummer 1265
Properties[3]
C5H12
Molar mass 72.15 g·mol−1
Appearance Colourless liquid
Odour Gasoline-lik[2]
Density 0.626 g mL−1
Meltin pynt −130.5 tae −129.1 °C; −202.8 tae −200.3 °F; 142.7 tae 144.1 K
Bylin pynt 35.9 tae 36.3 °C; 96.5 tae 97.3 °F; 309.0 tae 309.4 K
40 mg L−1 (at 20 °C)
log P 3.255
Vapour pressur 57.90 kPa (at 20.0 °C)
kH 7.8 nmol Pa−1 kg−1
Acidity (pKa) ~45
Basicity (pKb) ~59
λmax 200 nm
Magnetic susceptibility -63.05·10−6 cm3/mol
Refractive index (nD) 1.358
Viscosity 0.240 cP (at 20 °C)
Thermochemistry
Speceefic heat capacity, C 167.19 J K−1 mol−1
Staundart molar
entropy
So298
263.47 J K−1 mol−1
Std enthalpy o
formation
ΔfHo298
−174.1–−172.9 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−3.5095–−3.5085 MJ mol−1
Hazards
GHS pictograms The flame pictogram in the Globally Harmonized Seestem o Classification an Labelling o Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS) The health hazard pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS) The environment pictogram in the Globally Harmonized Seestem o Classification an Labellin o Chemicals (GHS)
GHS signal wird DANGER
GHS hazard statements H225, H304, H336, H411
GHS precautionary statements P210, P261, P273, P301+310, P331
NFPA 704
Flammability code 4: Will rapidly or completely vaporize at normal atmospheric pressur an temperatur, or is readily dispersed in air an will burn readily. Flash pynt ablo 23 °C (73 °F). E.g., propaneHealth code 1: Exposur would cause irritation but anly minor residual injury. E.g., turpentineReactivity code 0: Normally stable, even unner fire exposur condeetions, an is nae reactive wi watter. E.g., liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
4
1
0
Flash pynt −49.0 °C (−56.2 °F; 224.2 K)
260.0 °C (500.0 °F; 533.1 K)
Explosive leemits 1.5–7.8%[2]
Lethal dose or concentration (LD, LC):
  • 3 g kg−1 (dermal, rabbit)
  • 5 g kg−1 (oral, moose)
130,000 mg/m3 (moose, 30 min)
128,200 ppm (moose, 37 min)
325,000 mg/m3 (moose, 2 or)[4]
US heal exposur leemits (NIOSH):
PEL (Permissible)
TWA 1000 ppm (2950 mg/m3)[2]
REL (Recommendit)
TWA 120 ppm (350 mg/m3) C 610 ppm (1800 mg/m3) [15-minute][2]
IDLH (Immediate danger)
1500 ppm[2]
Relatit compoonds
Relatit alkanes
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

Pentane is an organic compoond wi the formula C5H12 — that is, an alkane wi five carbon atoms.

References[eedit | eedit soorce]