L-Carvone (Optically Active)
Chemical Name: (R)-(–)-Carvone | Source: Natural Spearmint/Dill
CAS: 6485-40-1
FEMA: 2242
Formula: C₁₀H₁₄O
Purity ≥ 99%
Chemical Name: (R)-(–)-Carvone | Source: Natural Spearmint/Dill
| Molecular Weight | 150.22 g/mol |
|---|---|
| HS Code | 291419 |
| Boiling Point | ~231 °C |
| Enantiomeric Excess | ≥ 98 % |
| Grades | Food / Flavour / Fragrance / Pharmaceutical |
| Appearance | Clear, colourless to pale yellow liquid |
|---|---|
| Odour | Sweet, minty, spearmint-like |
| Taste | Sweet, cooling |
| Solubility | Soluble in alcohol & oils; insoluble in water |
| Assay (GC) | ≥ 99.0 % |
|---|---|
| Optical Rotation @ 20 °C | −55° to −65° |
| Specific Gravity @ 25 °C | 0.958 – 0.970 |
| Refractive Index @ 20 °C | 1.498 – 1.505 |
| Acid Value | ≤ 1.0 mg KOH/g |
Isomer Purity: L-Carvone predominant
Flash Point: ~85 °C
Heavy Metals: ≤ 10 ppm
*Residual Solvents as per ICH limits.
Typical Analysis for Batch-wise QA Compliance
| Test Parameter | Specification | Typical Result |
|---|---|---|
| Assay (GC) | ≥ 99.0 % | 99.4 % |
| Optical Rotation @ 20 °C | −55° to −65° | −60.2° |
| Specific Gravity @ 25 °C | 0.958 – 0.970 | 0.964 |
| Refractive Index @ 20 °C | 1.498 – 1.505 | 1.501 |
| Appearance | Clear colourless liquid | Conforms |
| Odour | Sweet minty | Conforms |
Conclusion: The tested batch conforms to specification and is suitable for food, flavour, fragrance, and pharmaceutical applications.