... oil,medical oil,food additive oil,CAS No.90028-66-3. Efamol,Evening primrose oil,Carrier oil,Base oil,food additive ... yellow liquid 2. Odour: with a characteristic evening primrose aroma 3. Relative density: 0.9212~0.9301 4. Refractive index: 1 ... oil,medical oil,food additive oil,CAS No.90028-66-3