1,4-Dioxane
Solvent Properties

CAS 123-91-1


Physical Properties  
   
Molecular weight 88.11
Boiling point 101.32°C
Vapor pressure 29 Torr at 20°C
Freezing point 11.80°C
Refractive index 1.4224 at 20°C
Density 1.0336 g/mL (8.625 lb/gal) at 20°C
  1.0280 g/mL (8.578 lb/gal) at 25°C
Dielectric constant 2.25 at 20°C
Dipole moment 0.45 D at 25°C
Solvent group 6
Polarity index (P') 4.8
Eluotropic value on alumina 0.56
Eluotropic value on octadecylsilane 11.7
   
Viscosity 1.37 cP at 20°C
Surface tension 34.45 dyn/cm at 15°C
Solubility in water Miscible in all proportions
   
Regulatory and Safety Data  
DOT Hazard Class 3, Flammable Liquid
Packing Group II
UN Identification Number UN1165
   
Storage Store in an area designed for flammable storage, or an approved metal cabinet, away from direct sunlight, heat and sources of ignition.
   
EPA applicable waste code(s) D001, U108
Suspected carcinogen (IARC)  
Flash point 54°F (12°C) by closed cup
Lower explosive limit 2.0%
Upper explosive limit 22.0%
Time Weighted Average 25 ppm ACGIH
Peroxide hazard Check for presence od peroxides before concentrating.

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