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

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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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