L-Methionine 98+%
Supplier: Thermo Scientific
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166160250
166161000
166160025
166165000
ACRO166160250EA
28
GBP
ACRO166160250
ACRO166161000
ACRO166160025
ACRO166165000
L-Methionine 98+%
L-Methionine
Formula:
C₅H₁₁NO₂S Boiling Pt: 278 °C (1013 hPa) Melting Pt: 276…279 °C (dec.) Density: 1,373 g/cm³ (20 °C) Storage Temperature: Refrigerator |
MDL Number:
MFCD00063097 CAS Number: 63-68-3 EINECS: 200-562-9 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 | ≤0.4 % |
TLC | ≤0.5 % of any individual impurity |
pH | 5.5 to 6.5 (1 % in water) |
Specific optical rotation | +22.4° to +24.7° (20°C, 589 nm) (c=2, 6 N HCl) |
Titration with HClO4 | 98.0 to 102.0 % (on dried basis) |
Chloride (Cl) | ≤500 ppm |
Sulfate (SO4) | ≤300 ppm |
Iron (Fe) | ≤30 ppm |
Heavy metals (as Pb) | ≤15 ppm |
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