DL-Methionine 99+%
Supplier: Thermo Fisher Scientific
Certificates
About this item
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
CAS Number:59-51-8
:
Formula:C₅H₁₁NO₂S
MDL Number:MFCD00063096
Density:1.34 g/cm³
Molecular Weight:149.21 g/mol
Melting Pt:270…273 °C (dec.)
Merck Index:13,06004
Storage Temperature:Refrigerator
EINECS:200-432-1
Specifications
- Environmentally Preferable:
Specifications
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)
Specification Test Results
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