Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Information
Name: L-Lysine
Alias: 2,6-Diaminohexanoic acid
CAS No.: 56-87-1
Molecular Formula: C6H14N2O2
Molecular Weight: 146.19
2. Physical and Chemical Properties
Physical Properties
- Appearance: White crystalline powder
- Odor: Odorless, slightly sweet taste
- Solubility: Freely soluble in water; slightly soluble in ethanol; insoluble in acetone, ether and nonpolar solvents
- Melting Point: 224–225 °C (decomposes)
- Specific Rotation: [α]D2? +13.5° ~ +15.0° (6mol/L HCl solution)
- Hygroscopicity: Strongly hygroscopic under high humidity air
Chemical Properties
- Molecular structure: Essential aliphatic dibasic amino acid, with α-amino, ε-amino and carboxyl groups, typical amphoteric compound
- Acid-base characteristic: Contains two amino groups, stronger alkalinity than ordinary monoamino acids; can form mono-salt and di-salt with acids
- Maillard reaction: The free ε-amino group easily reacts with reducing sugars under heating to produce brown substances
- Thermal stability: Stable below 100 °C; long-term high temperature causes decarboxylation and deamination, losing nutritional activity
- Photostability: Stable under indoor light; long-term damp and hot storage easy to turn yellow
- Compatibility: Compatible with other amino acids, food and feed raw materials; incompatible with strong oxidants, aldehydes
3. Main Application Fields
1. Feed Additive (Core Application)
- First limiting amino acid for pig, poultry and aquatic feed, improve protein utilization, promote animal growth
- Replace part of soybean meal to reduce feed cost
2. Food Nutritional Fortifier
- Nutrient supplement for flour, beverage, dairy and health food, supplement human essential amino acid
- Correct nutritional imbalance of plant-based diet lacking lysine
3. Pharmaceutical Raw Material
- Raw material for compound amino acid injection, oral amino acid preparations
- Wound repair auxiliary raw material, promote tissue healing
4. Biochemical Culture Medium
Nitrogen source for microbial fermentation culture medium
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 56-87-1 |
| Molecular Formula | C6H14N2O2 |
| Molecular Weight | 146.19 |
| Appearance | White crystalline powder |
| HPLC Purity | Feed/Food Grade ≥98.5%; Pharma Grade ≥99.0% |
| Water Content (KF) | ≤0.40% |
| Residue on Ignition | ≤0.10% |
| Heavy Metals (Pb) | ≤10 ppm |
| Arsenic (As) | ≤2 ppm |
| Packaging | 25kg PE lined woven bag / fiber drum |
| Storage Condition | Hermetic cool dry warehouse below 25 °C; strictly isolate humid air to prevent deliquescence |
| Transportation Requirement | Nutritional amino acid solid, moisture-proof sealed packaging |
| Shelf Life | 36 months under intact sealed packaging |
Safety Warning
Low toxicity, safe within standard dosage. Dust may irritate respiratory tract and eyes during operation; wear dust mask and protective gloves in ventilated environment. Must be tightly sealed during storage to avoid moisture absorption and yellowing. Avoid co-storage with sugar raw materials under high temperature for a long time to prevent browning reaction.
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