Cyclopentane
Solvent Properties

CAS 287-92-3


Physical Properties  
Molecular weight 70.14
Boiling point 49.26°C
Vapor pressure 400 Torr at 20°C
Freezing point -93.87°C
Refractive index 1.4064 at 20°C
Density 0.7454 g/mL (6.219 lb/gal) at 20°C
  0.7405 g/mL (6.178 lb/gal) at 25°C
Dielectric constant 1.97 at 20°C
Dipole moment 0.00 D at 25°C
Solvent group 0
Polarity index (P') 0.1
Eluotropic value on alumina 0.05
Viscosity 0.44 cP at 20°C
Surface tension 22.42 dyn/cm at 20°C
Solubility in water 0.01% at 20°C
Solubility of water in cyclopentane 0.01% at 20°C
   
Regulatory and Safety Data  
DOT Hazard Class 3, Flammable Liquid
Packing Group II
UN Identification Number UN1146
   
Storage Store in an area designed for flammable storage, or in an approved metal cabinet, away from direct sunlight, heat and sources of ignition.
   
EPA applicable waste code(s) D001
Flash point <20°F (<-7°C) by closed cup
Lower explosive limit 1.5%
Upper explosive limit Not listed
Time Weighted Average 600 ppm ACGIH

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