| Property | Specification |
| Color | Dark brown to black |
| Odor | Pungent, sharp |
| Taste | Hot, pungent, bitter |
| Moisture Content | 12% max |
| Volatile Oil Content | 2% – 3% |
| Piperine Content | 5% – 9% |
| Bulk Density | 0.56 – 0.58 g/cm³ |
| Particle Size | 80 mesh (min.) |
| Ash Content | 6% – 8% max |
| Foreign Matter | 0.5% max |
| Purity | 95% – 98% |
| Storage | Cool, dry place |