Cyclopentane

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Cyclopentane
Skeletal formula
Space-filling model
Names
Preferred IUPAC name
Cyclopentane
Other names
pentamethylene
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.005.470
EC Number
  • 206-016-6
RTECS number
  • GY2390000
UNII
  • C1CCCC1
Properties
C5H10
Molar mass 70.1 g/mol
Appearance clear, colorless liquid
Odor mild, sweet
Density 0.751 g/cm3
Melting point −93.9 °C (−137.0 °F; 179.2 K)
Boiling point 49.2 °C (120.6 °F; 322.3 K)
156 mg·l−1 (25 °C)[1]
Solubility soluble in ethanol, acetone, ether
Vapor pressure 45 kPa (20 °C) [2]
Acidity (pKa) ~45
-59.18·10−6 cm3/mol
1.4065
Hazards
Main hazards Flammable[3]
NFPA 704

NFPA 704.svg

3
1
0
 
Explosive limits 1.1%-8.7%[3]
U.S. Permissible
exposure limit (PEL)
none[3]
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

Cyclopentane (also called C pentane) has a chemical formula C5H10. It is usually formed by cracking cyclohexane in the presence of high temperature and pressure.[4]

References[change | change source]

  1. Record of cyclopentane in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 28 February 2015.
  2. http://www.ilo.org/dyn/icsc/showcard.display?p_version=2&p_card_id=0353
  3. 3.0 3.1 3.2 NIOSH Pocket Guide to Chemical Hazards. "#0171". National Institute for Occupational Safety and Health (NIOSH).
  4. https://www.corrosionpedia.com/definition/2728/cyclopentane