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Skeletal formula of 1-pentanol
Ball and stick model of 1-pentanol
IUPAC name
3D model (JSmol)
ECHA InfoCard 100.000.684
EC Number 200-752-1
MeSH n-Pentanol
RTECS number SB9800000
UN number 1105
Molar mass 88.15 g·mol−1
Density 0.811 g cm−3
Melting point −78 °C; −109 °F; 195 K
Boiling point 137 to 139 °C; 278 to 282 °F; 410 to 412 K
22 g L−1
log P 1.348
Vapor pressure 200 Pa (at 20 °C)
-67.7·10−6 cm3/mol
207.45 J K−1 mol−1
258.9 J K−1 mol−1
−351.90–−351.34 kJ mol−1
−3331.19–−3330.63 kJ mol−1
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word WARNING
H226, H315, H332, H335
NFPA 704
Flammability code 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g., diesel fuel Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 49 °C (120 °F; 322 K)
300 °C (572 °F; 573 K)
Related compounds
Related compounds


Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

1-Pentanol, (or n-pentanol, pentan-1-ol), is an alcohol with five carbon atoms and the molecular formula C5H11OH.[2] 1-Pentanol is a colorless liquid with an unpleasant aroma. It is the straight-chain form of amyl alcohol, one of 8 isomers with that formula.

The hydroxyl group (OH) is the active site of many reactions. The ester formed from 1-pentanol and butyric acid is pentyl butyrate, which smells like apricot. The ester formed from 1-pentanol and acetic acid is amyl acetate (also called pentyl acetate), which smells like banana.

Pentanol can be used as a solvent for coating CDs and DVDs. Pentanol has all the properties necessary to replace gasoline as an internal combustion fuel.

Pentanol can be prepared by fractional distillation of fusel oil. To reduce the use of fossil fuels, research is underway to develop cost-effective methods of producing (chemically identical) bio-pentanol with fermentation.


  1. ^ "n-pentanol - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 10 October 2011. 
  2. ^ CRC Handbook of Chemistry and Physics 65Th Ed.