L(-)-Proline 99+%

Supplier: Thermo Scientific

ACRO157625000EA 572 EUR
ACRO157625000 ACRO157620050 ACRO157620250 ACRO157621000
L(-)-Proline 99+%
L(-)-Proline

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Specification Test Results

Appearance White Crystalline powder or crystals
Infrared spectrum Conforms
Loss on drying ≤0.3 % (105°C, 3 hrs)
Sulfated ash ≤0.1 %
UV transmittance ≥95 % (c=10, H2O, 430 nm) 1 cm cell
pH 5.5 to 7 (2.5 % at 25°C)
Specific optical rotation -84.5° to -86.8° (20°C, 589 nm) (c=4, H2O)
Titration with HClO4 99.0 to 101.0 %
Chloride (Cl) ≤200 ppm
Sulfate (SO4) ≤200 ppm
Ammonium (NH4) ≤200 ppm
Arsenic (As) ≤1 ppm
Iron (Fe) ≤10 ppm
Heavy metals (as Pb) ≤10 ppm
Other amino acids ≤0.5 % (TLC)
Heavy metals (as Pb) ≤5 ppm
Insoluble matter ≤0.005 % (in water)

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