DL-Methionine 99+%

: Thermo Fisher Scientific

DL-Methionine 99+%

: Thermo Fisher Scientific

:59-51-8

:

:C₅H₁₁NO₂S

:MFCD00063096

:149.21 g/mol

:13,06004

:270…273 °C (dec.)

:1.34 g/cm³

:Refrigerator

:200-432-1

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)

ACRO12565

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