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Skeletal formula of 1-pentanol
Ball and stick model of 1-pentanol
CAS number 71-41-0 YesY
PubChem 6276
ChemSpider 6040 YesY
UNII M9L931X26Y YesY
EC number 200-752-1
UN number 1105
KEGG C16834 N
MeSH n-Pentanol
ChEBI CHEBI:44884 YesY
RTECS number SB9800000
Jmol-3D images Image 1
Molecular formula C5H12O
Molar mass 88.15 g mol−1
Density .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
Solubility in water 22 g l−1
log P 1.348
Vapor pressure 200 Pa (at 20 °C)
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
EU Index 603-200-00-1
EU classification Harmful Xn
R-phrases R10, R20, R37, R66
S-phrases (S1/2), S46
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)
Related compounds
Related compounds Hexane


Except where noted otherwise, 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 C5H12O.[2] 1-Pentanol is a colorless liquid with an unpleasant aroma. There are 8 alcohols with this molecular formula (see amyl alcohol). The ester formed from butyric acid and 1-pentanol, pentyl butyrate, smells like apricot. The ester formed from acetic acid and 1-pentanol, amyl acetate (pentyl acetate), smells like banana.

Pentanol can be prepared by fractional distillation of fusel oil. To reduce the use of fossil fuels, research is underway to discover cost-effective methods of utilizing fermentation to produce Bio-Pentanol. Pentanol can be used as a solvent for coating CDs and DVDs. Another use is a replacement for gasoline.


  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.