18 CASTOR OIL, THICKENED CASTOR OIL, DEHYDRATED CASTOR OIL, THICKENED DEHYDRATED CASTOR OIL, HYDROGENATED CASTOR OIL, AND THICKENED VEGETABLE OILS OTHER THAN CASTOR OIL, SUCH AS RAPESEED OIL, LINSEED OIL, SOY-BEAN OIL AND THE LIKE, AND DERIVATIVES OF CASTOR OIL FATTY ACIDS AND OF UNDECYLENIC ACID