| ITEM | STANDARD |
| Appearance | Crystalline Powder |
| Color | Whitish |
| Aroma | None |
| Flavor | Slightly Sweet |
| Assay` | 98.5-101.5% |
| PH | 4.5-6.0 |
| Specific rotation | +6.3~-+7.3° |
| Loss on Drying | =<0.20% |
| Heavy Metals (Lead) | =< 5ppm |
| Arsenic(As2SO3) | =<1ppm |
| Ignited Residue | =< 0.1% |
| Identification | USP Glutamine RS |