L-Menthol, commonly referred to simply as menthol, is a naturally occurring compound obtained from the essential oils of peppermint or other mint plants. It is known for its characteristic cooling, minty flavor and is widely used in pharmaceuticals, cosmetics, and food products.
Chemical Information
Chemical Name: (1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol
Chemical Formula: C10H20O
Molecular Weight: 156.27 g/mol
CAS Number: 2216-51-5
Specifications
Identification: GC-MS Analysis: The chromatogram should show a major peak corresponding to L-menthol.
Assay: Purity: Not less than 99% L-menthol (measured by GC)
Physical Tests:
Melting Point: 41-44°C
Specific Rotation: -50° to -49°
Chemical Tests:
Residual Solvents: Should comply with the guidelines for residual solvents (e.g., USP, EP)
Heavy Metals: Should comply with the limits for heavy metals (e.g., not more than 10 ppm)
Microbial Limits: Should comply with microbial limits (e.g., not more than 100 CFU/g)