L (+)-Cystein 98+%

Leverantör: Thermo Scientific
Varning

Synonyms: H-Cys-OH, (R)-(+)-Cysteine, (R)-2-Amino-3-mercaptopropanoic acid

173600050 173600250 173601000 173605000
ACRO173600050EA 500 SEK
ACRO173600050 ACRO173600250 ACRO173601000 ACRO173605000
L (+)-Cystein 98+%
L (+)-Cystein
Formel: HSCH₂CH(NH₂)CO₂H
MW: 121,16 g/mol
Kokpunkt: 254 °C (1013 hPa)
Smältpunkt: 220 °C (dec.)
Densitet: 1,523 g/cm³ (20 °C)
Storage Temperature: Kylskåp
MDL Number: MFCD00064306
CAS nummer: 52-90-4
EINECS: 200-158-2

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Specifikation testresultat

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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