L-Methionine , 99% , 63-68-3

Synonym(s):
L-Methionine;Met;L-Methionine - CAS 63-68-3 - Calbiochem;(S)-2-Amino-4-(methylmercapto)butyric acid;L-2-Amino-4-(methylthio)butanoic acid

CAS NO.：63-68-3

Empirical Formula: C5H11NO2S

Molecular Weight: 149.21

MDL number: MFCD00063097

EINECS: 200-562-9

PRODUCT Properties

• Melting point: 284 °C (dec.)(lit.)
• alpha: 23.25 º (c=2, 6N HCl)
• Boiling point: 393.91°C (estimate)
• Density: 1,34g/cm
• refractive index: 1.5216 (estimate)
• storage temp.: 20-25°C
• solubility: 1 M HCl: 0.5 M at 20 °C, clear, colorless
• form: Solid
• pka: 2.13(at 25℃)
• color: White
• Odor: Slight characteristic
• PH: 5-7 (10g/l, H2O, 20℃)
• optical activity: [α]20/D +23.7±0.5°, c = 5% in 5 M HCl
• Water Solubility: Soluble
• λmax: λ: 260 nm Amax: 0.40; λ: 280 nm Amax: 0.05
• Merck: 14,5975
• BRN: 1722294
• Stability: Stable. Incompatible with strong oxidizing agents.
• LogP: 0.217 (est)
• CAS DataBase Reference: 63-68-3(CAS DataBase Reference)
• NIST Chemistry Reference: L-Methionine(63-68-3)
• EPA Substance Registry System: L-Methionine (63-68-3)

Description and Uses

Colorless or white lustrous plates, or a white crystalline powder. It has a slight, characteristic odor. It is soluble in water, in alkali solutions, and in dilute mineral acids. It is slightly soluble in alcohol and practically insoluble in ether.

methionine is slows down and normalizes oil gland sebum production. Methionine is also used as a texturizer in cosmetic creams. It is an essential amino acid found in a number of proteins and obtained by means of fermentation.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H302
• Precautionary statements: P501-P270-P264-P301+P312+P330
• Risk Statements: 33
• Safety Statements: 24/25
• WGK Germany: 2
• RTECS: PD0457000
• F: 10-23
• TSCA: Yes
• HS Code: 29304010
• Hazardous Substances Data: 63-68-3(Hazardous Substances Data)
• Toxicity: LD50 oral in rat: 36gm/kg