... -Menthol:above 33% 3,Optical Rotation:-17-24 degrees Celsius 4,Packing: 180 kgs per galvanized iron drum 1,DMO 50 ... -Menthol:above 33% 3,Optical Rotation:-17-24 degrees Celsius 4,Packing: 180 kgs per galvanized iron drum Specification: Product name ... /g):1.0 MaimumEster Value(Ester Content): 5.6-18.4(2.0%~6.5%)Ester Value after Acetylation (Equivalent to ...