| Appearance | Fine, free-flowing powder |
| Color | Light tan to off-white |
| Odor | Characteristic onion odor |
| Flavor | Characteristic onion flavor |
| Particle Size | 80% pass through 60 mesh screen |
| Moisture Content | ≤ 6% |
| Ash Content | ≤ 6% |
| Solubility | Fully soluble in water |
| Bulk Density | 0.5 - 0.7 g/cm³ |
| Microbiological Standards | Must meet specified safety standards for microbial limits |
