L-Methionine Food Grade
35 Inquiries
63-68-3
Food Grade
QINGDAO
25kg/0.2kg Bag
2017-11-19
taurine
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Product Description
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Seller Information
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Inquiry History
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DescriptionL-Methionine is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant.Basic Info
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Product Name:
l-Methionine
Other Name:L-Methionine;Methionine,L-;Cymethion;Methionine;Butanoic acid,2-amino-4-(methylthio)-,(S)-;2-Amino-4-(methylthio)butyric acid;S-Methionine;α-Amino-γ-methylmercaptobutyric acid;γ-Methylthio-α-aminobutyric acid;(S)-2-Amino-4-(methylthio)butanoic acid;l-Methionine;L-α-Amino-γ-methylthiobutyric acid;L-Homocysteine,S-methyl-;h-Met-oh;Acimethin;NSC 22946;S-Methyl-L-homocysteine;Secretory peptide (human clone HTXDU73);Methiorep;Meth-o-Tas;(2S)-2-Azaniumyl-4-methylsulfanylbutanoate;(2S)-2-Amino-4-(methylsulfanyl)butanoic acid;7005-18-7;24425-78-3;1437749-32-0;1437749-60-4;1437749-65-9;1437749-75-1;1437749-80-8;1437769-00-0;1437870-94-4;1437870-95-5;1437870-97-7;1437870-98-8;1437871-20-9;1463481-01-7;1463481-06-2;1463481-15-3;1463481-19-7;1463481-23-3;1463481-27-7;1463481-31-3;1463481-37-9;1463481-41-5;1463481-46-0;1463481-51-7;1463481-58-4;1463481-73-3;1463481-80-2;1463481-89-1;1463610-75-4;1463610-76-5;1466415-57-5
CAS No.:63-68-3
Molecular Formula:C5H11NO2S
InChIKeys:InChIKey=FFEARJCKVFRZRR-BYPYZUCNSA-N
Molecular Weight:149.21100
Exact Mass:149.21
EC Number:200-562-9
UNII:AE28F7PNPL
NSC Number:760117
DSSTox ID:DTXSID5040548
NCI Thesaurus Code:C29600
Color/Form:Minute hexagonal plates from dilute alcohol|Colorless or white, lustrous plates or as white, crystalline powder
ATC Code:V - Various
HScode:2930400000
Characteristics-
PSA:
88.62000
XLogP3:-1.9
Appearance:Minute hexagonal plates from dilute alcohol. (NTP, 1992)
Density:1.206 g/cm3
Melting Point:280-282 °C (decomp)
Boiling Point:123-126 °C @ Press: 15 Torr
Flash Point:139.4ºC
Refractive Index:1.531
Water Solubility:H2O: soluble
Storage Conditions:Store at RT.
Vapor Pressure:8.14X10-8 mm Hg at 25 deg C (est)
Toxicity:LD50 oral in rat: 36gm/kg
Specific rotation:Specific optical rotation: 22.5 deg at 25 °C/D (1 N HCl)
Odor:Faint
Taste:Sulfurous
PH:pH (1% aqueous solution) = 5.6-6.1
PKA:2.28(at 25 °C)
Henrys Law Constant:Henry's Law constant = 2.11X10-11 atm-cu m/mol at 25 °C (est)
Dissociation Constants:2.28 (at 25 °C)|pKa = 2.28; pK2 = 9.21
Collision Cross Section:133.65 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|152.05 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|127 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|133.1 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|132 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|134.08 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|140.5 Ų [M-H]-
Experimental Properties:Platelets from alcohol. mp 281 °C (decomposes), density 1.340; pKa1 = 2.28, pKa2 = 9.21; pH of 1% aqueous solution 5.6-6.1; Rf value 0.77. Solubility in water (g/L) at 0 °C: 18.18; at 25 °C: 33.81; at 50 °C: 60/.70; at 75 °C: 15.2 °C. Soluble in dilute acids, alkalies. Very slightly soluble in 95% alcohol. Insoluble in ether. /Methionine, DL-form/|UV: 1-65 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York) /Methionine (DL)/|Hydroxyl radical reaction rate constant = 5.13X10-11 cu cm/molec-sec at 25 °C (est)
Air and Water Reactions:Reacts with water, steam, and/or acids to produce toxic and flammable vapors of hydrogen sulfide (NTP, 1992). Water soluble (NTP, 1992). pH of 1% aqueous solution is 5.6-6.0.
Reactive Group:Sulfides, Organic
Reactivity Profile:An organosulfide and amine derivative, carboxylic acid. Look at Reactive Groups 20 (organosulfides), 7 (amines), and 3 (carboxylic acids) may give indications about reactive tendencies. It is an amino acid essential in human nutrition.
Hazard IdentificationClassification of the substance or mixture
Not classified.
GHS label elements, including precautionary statements
Pictogram(s) No symbol. Signal word No signal word
Hazard statement(s) none
Precautionary statement(s) Prevention none
Response none
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants. Well closed.
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Seller Information
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Business Type:
Manufactory
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Main Products:
taurine
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Location:
200meters of South Yangcun Transformer Substation,Jizao Road,Jizhou City,Hebei Province 053200,China.
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Payment Terms:
D/P,L/C
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Average lead Time:
60
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Total Annual Revenue:
Less than $1 million
We are professional amino acids manufacturer, the main products are L-Lysine HCL, Glycine, DL-Methionine,L-Methionine,L-Threonine, L-Glutamic acid etc. Same time, we also trade other amino acids, vitamins, sweeteners and extractive.
After ten years of rapid development, Changhao company has developed from a small trading company into a modern technology enterprise group with more than 150 employees. The company subordinate Hengshui Changhao Borunke Trading Co., LTD., and has Hangzhou office. The company produces 10000 tons of various amino acids annually. The annual sales revenue is 200 million. Our products are mainly exported to more than 100 countries such as Europe, Africa, Asia, North America, South America and Oceania. Foreign countries have more than 3,000 square meters of exclusive storage. Exports generate about $10 million a year in foreign exchange. At the same time supply the domestic market, the product coverage domestic 32 provinces, the city, the autonomous region.
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Inquiry History35 Inquiries
Country Product Purchase Quantity Date Posted 
India
L-Methionine
100.00 KG Jun 6, 2025 
Malaysia
L-Methionine
20.00 MT Apr 1, 2026
Malaysia
L-Methionine
20.00 MT Jun 16, 2026
India
Methionine
1.00 20' Fcl May 25, 2026
India
L-Methionine
1.00 20' Fcl Apr 27, 2026
India
L-Methionine
200.00 KG Nov 10, 2025
India
L-Methionine
5.00 MT Jul 16, 2025
India
L-Methionine
10.00 TON Jul 9, 2025
India
L-Methionine
7.00 KG Jul 9, 2025 
Bangladesh
L-methionine
1 MT Feb 5, 2025 
Singapore
L-Methionine
1 MT Feb 7, 2024 
Guatemala
dl-methionine dl methionine 99% feed grade for poultry feedPopular 1 buyer
25 MT Oct 31, 2023
India
methionine
100.00 KG Sep 5, 2023
India
L-Methionine
500.00 KG Aug 4, 2026
India
L-Methionine
100 G May 28, 2026
India
L-Methionine
5000 KG Apr 5, 2026
India
L-Methionine
1.00 KG Nov 10, 2025
India
L-Methionine
20.00 TON May 17, 2025 
Thailand
Methionine
1 KG Mar 17, 2025 
Ecuador
METIONINA
1 MT Feb 25, 2025 Post an enquiry for this product
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