DL-Methionine 99+%

Supplier: Thermo Scientific Chemicals

ThermoScintific Chemicals

ThermoScintific Chemicals

Synonyms: 2-Amino-4-(methylthio)butanoic acid, (±)-2-Amino-4-(methylthio)butyric acid, Methioninum racemicum, Methionine racematic, H-DL-Met-OH, (±)-Methionine, (±)-2-Amino-4-(methylthio)butanoic acid

12565-0010 12565-0025 12565-1000 12565-2500

TS12565-0010EA 101 USD

TS12565-0010 TS12565-0025 TS12565-1000 TS12565-2500

DL-Methionine 99+%

DL-Methionine

Formula: C₅H₁₁NO₂S
MW: 149.21 g/mol
Melting Pt: 270…273 °C (dec.)
Density: 1.34 g/cm³
Storage Temperature: Refrigerator

MDL Number: MFCD00063096
CAS Number: 59-51-8
EINECS: 200-432-1
Merck Index: 13,06004

Specification Test Results

Appearance	White Crystalline powder or crystals
Infrared spectrum	Conforms
Loss on drying	≤0.5 % (1 g, 105°C)
Sulfated ash	≤0.1 %
UV transmittance	≥95 % (c=10, 2 N HCl, 430 nm) 1 cm cell
pH	5.4 to 6.1 (2 % w/v in water)
Titration with HClO4	99.0 to 101.0 % (on dried substance)
Chloride (Cl)	≤200 ppm
Sulfate (SO4)	≤200 ppm
Ammonium (NH4)	≤1000 ppm
Heavy metals (as Pb)	≤10 ppm
Other amino acids	≤0.2 % (TLC)

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