L(+)-Cysteine 98+%
:52-90-4
:
:HSCH₂CH(NH₂)CO₂H
:MFCD00064306
:121.16 g/mol
:13,02810
:254 °C (1013 hPa)
:220 °C (dec.)
:1,523 g/cm³ (20 °C)
:200-158-2
:GHS07
:Refrigerator
- 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
- Pack typePk