Heptane
Solvent Properties

CAS 142-82-5


Physical Properties  
Molecular weight 100.21
Boiling point 98.43°C
Vapor pressure 35.5 Torr at 20°C
Freezing point -90.6°C
Refractive index 1.3876 at 20°C
Density 0.6837 g/mL (5.705 lb/gal) at 20°C
  0.6795 g/mL (5.670 lb/gal) at 25°C
Dielectric constant 1.92 at 20°C
Dipole moment 0.0 D at 25°C
Solvent group 0
Polarity index (P') 0.1
Viscosity 0.42 cP at 20°C
Surface tension 20.30 dyn/cm at 20°C
Solubility in water 0.0003% at 25°C
Solubility of water in heptane 0.01% at 25°C
   
Regulatory and Safety Data  
DOT Hazard Class 3, Flammable Liquid
Packing Group II
UN Identification Number UN1206
   
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 25°F (-4°C) by closed cup
Lower explosive limit 1.05%
Upper explosive limit 6.7%
 
Time Weighted Average 400 ppm ACGIH
 

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