【CAS】56-85-9 Molecular formula:C5H10N2O3 Relative molecular mass:146.146
Structural formula:
一．Product Property：
L-glutamine is a white crystalline powder that is soluble in water and has stable properties. It is a conditionally essential amino acid for the human body and has the functions of regulating immunity, promoting intestinal health and muscle repair.
二．Quality Index:
| Parameter | Unit | Specification (Food Grade) |
| Appearance | — | White crystalline powder |
| Assay (C₅H₁₀N₂O₃) | % (w/w) | ≥ 98.5 |
| Specific Rotation (α) | ° | +6.3° to +7.3° (20°C, 1% in H₂O) |
| Loss on Drying | % (w/w) | ≤ 0.2 |
| Residue on Ignition | % (w/w) | ≤ 0.1 |
| Heavy Metals (as Pb) | mg/kg | ≤ 10 |
| Arsenic (As) | mg/kg | ≤ 1 |
| Iron (Fe) | mg/kg | ≤ 30 |
| Chloride (Cl⁻) | % (w/w) | ≤ 0.05 |
| Sulfate (SO₄²⁻) | % (w/w) | ≤ 0.03 |
| Ammonium (NH₄⁺) | % (w/w) | ≤ 0.02 |
| pH (1% solution) | — | 4.5–6.0 |
| Microbiological Limits | — | Total plate count ≤ 1000 CFU/g; No pathogens |
三.Application scope and Usage：
Health food: As an athletic nutrition supplement, it helps relieve fatigue and enhance endurance.
四．Package and Storage：
The packaging of this product is 25 kilograms per bucket.
It should be stored in a sealed container in a cool and dry place (Suggested temperature≤25℃， Humidity≤60%)， protected from light and moisture， and kept away from oxidants. The shelf life of the original unopened package is usually 24 months. After opening, it should be used as soon as possible. During transportation， avoid high temperatures or severe vibrations and ensure compliance with the food-grade storage standards of the GB standard.
