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DL-Methionine
CAS Number: 59-51-8 or 63-68-3 (L-isomer) or 348-67-4 (D-isomer)
Molecular Formula: C5H11NO2S
Molecular Weight: 149.21
DL-Methionine
DL Methionine is an amino acid that produces several important molecules in your body. These molecules are essential for the proper functioning of your cells. Methionine essential amino acid in humans. It is largely used in animal feed.
General Properties and Specifications of Methionine or DL-2-amino-4-methylithio butanoic acid:
Appearance: Crystalline powder.
Odor: Faint.
Assay: 99% minimum.
Loss on drying: 0.3% maximum.
Ash content: 0.5% maximum.
pH (1% aqueous solution): 5.6 to 6.1
Relative density: 1.34 literature.
Melting point: 281C (Decomposes).
Solubility: Soluble in water.
Specifications of Methionine USP Grade:
C5H11NO2S --- 149.21
l-Methionine --- CAS 63-68-3
DEFINITION
Methionine contains NLT 98.5% and NMT 101.5% of l-methionine (C5H11NO2S), calculated on the dried basis.
IDENTIFICATION
Infrared Absorption
ASSAY
To pass the test.
Acceptance criteria: 98.5%–101.5% on the dried basis
Residue on Ignition: NMT 0.4%
Chloride and Sulfate, Chloride:
Acceptance criteria: NMT 0.05%
Chloride and Sulfate, Sulfate:
Acceptance criteria: NMT 0.03 %
Iron: NMT 30 ppm
Related Compounds: To pass the test.
Acceptance criteria: Any secondary spot of the Sample solution is not larger or more intense than the principal spot of the Standard solution.
Individual impurities: NMT 0.5%
Total impurities: NMT 2.0%
Optical Rotation, Specific Rotation:
Acceptance criteria: +22.4° to +24.7°
pH: 5.6–6.1
Loss on Drying: Dry a sample at 105C for 3 h: it loses NMT 0.3% of its weight.
Packaging and Storage: Preserve in well-closed containers.
Specifications of DL-Methionine FCC Food Grade:
DL-2-Amino-4-(methylthio)butyric Acid
CH3SCH2CH2CHCOOH NH2
C5H11NO2S Formula weight 149.21
CAS: 59-51-8
DESCRIPTION
DL-Methionine occurs as white crystalline platelets or a powder. One gram dissolves in about 30 mL of water. It is soluble in dilute acids and in solutions of alkali hydroxides. It is very slightly soluble in alcohol, and practically insoluble in ether. It is optically inactive. The pH of a 1:100 aqueous solution is between 5.6 and 6.1.
Function: Nutrient.
Identification: The infrared absorption spectrum of the sample exhibits relative maxima at the same wavelengths as those of a typical spectrum as shown in the section on Infrared Spectra, using the same test conditions as specified therein.
Assay: Not less than 98.5% and not more than 101.5% of C5H11NO2S, calculated on the dried basis.
Lead: Not more than 5 mg/kg.
Loss on Drying: Not more than 0.5%.
Residue on Ignition: Not more than 0.1%.
We also supply DL-Methionine BP Ph Eur Grade
Please visit SDS Safety Data Sheet of DL-Methionine Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
Suppliers and Manufacturers' Representative:
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org