features: 1) natural menthol crystal 2) c10h20o model: wt. 156. 27 3) 2-isopropyl-5 methyl-hexanol 4) color and appearance: colorless, transparent hexagonal, needlelike crystals specifications: melting point:: 42~44dc assay (menthol): >=99.5% ( l- menthol>=98%) specific rotation: 50 -49 (25dc) solubility: 1g sample can be dissolved in 5ml of 90%(v/v) alcohol, forming a clean solution non volatile matter: 0.05% max. arsenic content: <=3ppm heavy metal (as pb): <=10ppm odor and usage: having characteristic odor of natural menthol it is widely used in pharmaceuticals, food, cigarettes, tooth-paste and cosmetics. stored in closed containers and kept in cool and dry place below 33dc room temperature packing: 25kg/fiber board drum; 2.5kg/tin