DL-Methionine
- Createtime： 2026-04-14
- Updatetime： 2026-04-15
Product Details
| useage |
Industrial use
|
| deliveryInfo |
|
| appearance |
powder
|
| Molecular Weight |
149.22 g/mol
|
| aliasen |
|
| supplyCapacity |
50000MT/Month
|
| harbor |
Qingdao,China
|
| minorder |
1KG
|
| Appearance |
White crystalline powder
|
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.
Basic Information
Product Name: DL-Methionine
CAS Number: 59-51-8
Alias: DL-2-Amino-4-(methylthio)butanoic acid
Molecular Formula: C5H11NO2S
Molecular Weight: 149.22 g/mol
IUPAC Name: 2-amino-4-(methylsulfanyl)butanoic acid
Structural Information
- Structure Type: Racemic essential amino acid, sulfur-containing amino acid
- Structural Features: Racemic mixture of L- and D-isomers, contains amino group, carboxyl group and methylthio group.
Physical & Chemical Properties
- Appearance: White crystalline powder or colorless crystals
- Odor: Slight characteristic odor
- Melting Point: 270–273 °C (decomposition)
- Solubility: Soluble in water and dilute acids; slightly soluble in ethanol; insoluble in ether
- Stability: Stable under normal conditions. Resistant to heat; decomposes under strong alkali or prolonged high temperature.
Synthesis & Applications
Synthesis Method
Industrial production via chemical synthesis to obtain racemic product, then recrystallized and dried for purification.
Main Applications
- Feed Additive: Major nutritional fortifier for livestock and poultry feed.
- Food Industry: Nutritional supplement for food and beverage.
- Pharmaceutical: Used as amino acid infusion raw material and liver protection agent.
- Cosmetics: Applied in hair care products.
Safety & Storage Instructions
- Hazard Classification: Low toxicity, mild irritant.
- Personal Protection: Wear dust mask and ordinary gloves, avoid long-term inhalation of dust.
- Storage Condition: Keep sealed, store in cool, dry and ventilated place, moisture-proof.
- Transportation: General goods, prevent package damage and dampness.
Quality & Spectral Data
- Purity: ≥99.0%
- Loss on Drying: ≤0.5%
- Residue on Ignition: ≤0.1%
- pH (1% aqueous solution): 5.6–6.1
Information Summary Table
| Item | Specification |
| CAS Number | 59-51-8 |
| Product Name | DL-Methionine |
| Synonym | DL-2-Amino-4-(methylthio)butanoic acid |
| Molecular Formula | C5H11NO2S |
| Molecular Weight | 149.22 g/mol |
| Appearance | White crystalline powder |
| Melting Point | 270–273 °C (decompose) |
| Solubility | Soluble in water, slightly soluble in ethanol |
| Purity | ≥99.0% |
| Storage Condition | Sealed, cool dry place, moisture-proof |
| Hazard Property | Low toxicity, mild irritant |
| Main Usage | Feed additive, food fortifier, pharmaceutical raw material |
