薄荷醇的水晶

natural menthol crystal-menthol widely used in pharmaceutical, food, cigarettes, tooth-pastes and cosmeticsFeatures: 1) Refined from pure natural menthol 2) Specifications: a) Color and appearance: colorless, transparent hexagonal or needlelike crystals b) Odor: natural odor of menthol obtained from mentha avensis oil c) Melting point: 42 - 44oC d) Non-volatile matter: 0.05% maximum e) Solubility: 1g soluble in 5ml of 90% (v/v) alcohol, clear solution f) Specific rotation: -49 50 degrees (20oC) g) Thymol test: negative h) Litmus paper test: neutral i) Arsenic content: ≤3ppm j) Heavy metal content (calculated as Pb): ≤10ppm 2) Action and indication: L-Menthol widely used in pharmaceutical, food, cigarettes, tooth-pastes and cosmetics 3) Storage: stored in closed containers and kept in cool and dry places, below 33oC, avoid sunshine and rain 4) Packing: 25kg/barrel, paper barrel: 40cm (diameter) x 50cm (height) 5) Quality guarantee term: 12 months (under the conditions of fulfilling the requirements of storage and transport, and the packing is completed and sealed) 6) Standards: Chinese Pharmacopoeia 2000 edition, the USP-24, the BP-2000 and the FCC edition