L(-)-Proline 99+%

Supplier: Thermo Scientific

157620250 157621000 157620050 157625000
ACRO157620250EA 54.1 EUR
ACRO157620250 ACRO157621000 ACRO157620050 ACRO157625000
L(-)-Proline 99+%
L(-)-Proline
Formula: C₅H₉NO₂
Boiling Pt: 245 °C (1013 hPa)
Melting Pt: 228…233 °C
Density: 1.35 g/cm³
Storage Temperature: Ambient
MDL Number: MFCD00064318
CAS Number: 147-85-3
EINECS: 205-702-2
Merck Index: 13,07871

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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) ≤5 ppm
Other amino acids ≤0.5 % (TLC)
Insoluble matter ≤0.005 % (in water)

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