USP Grade Propylene Glycol

 
• Boiling Point, °C : 187.3
• Freezing Point, °C : -60
• Density, 20/20 °C : 1.0381
• Bulk density, lb/gal, 20 °C : 8.64
• Refractive index, 27 °C : 1.4293
• Surface Tension, dynes/cm, 25 °C : 40.1
• Viscosity, cP, 20 °C : 0.581
• Vapor pressure, mm Hg, 20 °C : 0.07
• Specific heat, cal/g, 20 °C : 0.590
• Heat of combustion, kgcal/mole : 431.0
• Flash Point, °C : 99 (210 °F)
• Solubility in water : Completely soluble

 
• Assay (PG on a dry basis), % : 99.5 Min
• Acidity (as Acetic Acid), % : 0.002 Max
• Color, Pt-Co, APHA : 10 Max
• Appearance : Clear, Viscous Liquid
• Chlorides, ppm : 0.5 Max
• Distillation, IBP (@ 760 mm Hg) : 186°C Min
• Distillation, DP (@ 760 mm Hg) : 189°C Max
• Heavy Metals (as Pb), ppm : 5 Max
• IR Spectrum : To Pass Test
• Iron, ppm : 0.5 Max
• Odor : Almost Odorless
• Suspended Matter : Substantially Free
• Water, % : 0.20 Max