China Natural Herbal Extrac Piperitol Crystal Menthol Crystals CAS 2216-51-5, Find details about China Natural Menthol Crystal, Menthol Crystal from Natural Herbal Extrac Piperitol Crystal Menthol Crystals CAS 2216-51-5
Specification of Menthol Crystal | |
Items | Standards |
Appreance | Colourless, transparent hexagonal orneedlelike crystals |
Assay % | 99.5% min |
Melting point (ºC) | 41.0- 44.0 |
Specific rotation | -45°~-51° |
Arsenic (As) | 3 mg/kg Max |
Heavy metals ppm | 10 mg/kg max |
Residue on ignition | 0.1% max |
Solubility(25 ºC) | 1g soluble in 5ml of 90%(v/v)alcohol,forming a clear solution |
Related substances | Examine by gas chromatography |
Conclusion | The product conforms to the standard BP2012/USP31 |