... ,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- ... Appearance: light yellow to yellow liquid 2. Odour: with a characteristic evening primrose aroma 3. Relative density: 0.9212~0.9301 ... Base oil,medical oil,food additive oil,CAS No.90028-66-3