L(+)-Cysteine 98+%
Supplier: Thermo Scientific
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Warning
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173600050
173600250
173601000
173605000
ACRO173600050EA
46
GBP
ACRO173600050
ACRO173600250
ACRO173601000
ACRO173605000
L(+)-Cysteine 98+%
L(+)-Cysteine
Formula:
HSCH₂CH(NH₂)CO₂H Boiling Pt: 254 °C (1013 hPa) Melting Pt: 220 °C (dec.) Density: 1,523 g/cm³ (20 °C) Storage Temperature: Refrigerator |
MDL Number:
MFCD00064306 CAS Number: 52-90-4 EINECS: 200-158-2 |
Specification Test Results
Appearance | White to almost white Powder or crystals |
Infrared spectrum | Conforms |
Loss on drying | ≤0.5 % (105°C, 3 hrs) |
Solubility | (2.5 % in water) Clear colorless |
Residue after ignition | ≤0.1 % |
pH | 4.5 to 5.5 (2.5 % in water) |
Specific optical rotation | +7.5° to +9.5° (20°C, 589 nm) (c=8, 5N HCl) |
Titration with HClO4 | 98.0 to 102.0 % |
Chloride (Cl) | ≤0.05 % |
Sulfate (SO4) | ≤0.03 % |
Ammonium (NH4) | ≤0.02 % |
Iron (Fe) | ≤10 ppm |
Heavy metals (as Pb) | ≤10 ppm |
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