Frankincense Essential Oil Is Distilled From Frankincense Resin. It Tends To Smell Sweeter, Cleaner And Fresher Than The Resin, And More People Prefer The Aroma Of Frankincense Essential Oil To That Of The Resin When It's Being Burned As Incense Appearance Colorless To Pale Yellow Clear Liquid Specific Gravity 0.86000 To 0.89000 @ 25.00 °c Pounds/gallon 7.156 To 7.406 Refractive Index 1.46600 To 1.47700 @ 20.00 °c Optical Rotation -0.05 To 0.00 Boiling Point 137.00 To 141.00 °c. @ 760.00 Mm Hg Flash Point 96.00 °f. Tcc Shelf Life 24 Month(s) Or Longer If Stored Properly Storage Store In Cool, Dry Place In Tightly Sealed Containers, Protected From Heat And Light Odor Type Terpenic