Heptane
Solvent Properties

CAS 142-82-5


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