... primrose oil,Essential oil,Carrier oil,Base oil,medical oil,food additive oil,CAS No.90028-66-3. Efamol,Evening primrose oil ... ,Carrier oil,Base oil,food additive oil,spice oil,CAS No.90028-66-3Function of medicinal ... to yellow liquid 2. Odour: with a characteristic evening primrose aroma 3. Relative density: 0.9212~0.9301 4. Refractive index ...