- PRODUCT: Pimento Leaf Oil NaturalCAS No.: mixture FEMA NO.: 2018APPEARANCE: A pale yellow liquid [product darkens with age]ORGANOLEPTIC: To conform to standardSpecific Gravity: 1.037 to 1.050@ 25 °C.Refractive Index: 1.531 to 1.536@ 20 °C.GC Purity [%]: To conform to standard