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LC2001 L-Cystine
for biochemistry

 

Order number Packaging Quantity Price €
AC29001 Plastic bottle 25 g 16.11
AC29001 Plastic bottle 100 g 29.03
AC29001 Plastic bottle 1 kg 240.30
AC29001 Plastic drum 10 kg inquire

 

Product information
Hill Formula C6H12N2O4S2
HS Code 2930 90 13
EC number 200-296-3
Molar mass 240.29 g/mol
CAS number 56-89-3

 

Chemical and physical data
Ignition temperature 400 °C
Solubility (20 °C) insoluble
Melting point 261 – 262 °C (decomposition)
Molar mass 240.29 g/mol
Density 1.677 g/cm3 (20 °C)
Bulk density 300 kg/m3
pH value >1 (H2O, 20 °C)

 

 

Safety information
RTECS HA2690000
Storage class 10 – 13 Other liquids and solids
WGK NWG not water endangering

 

Specifications
Assay (perchloric acid titration, calculated on dried substance) ≥ 99.0 %
Identity (IR-spectrum) passes test
Appearance white to almost white, fine powder
Appearance of solution (0.2 mol/l, hydrochloric acid 1 mol/l) clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance) -220.0° to – 225.0°
Chloride (Cl) ≤ 0.02 %
Sulfate (SO4) ≤ 0.01 %
Heavy metals (as Pb) ≤ 0.001 %
As (Arsenic) ≤ 0.0005 %
Ca (Calcium) ≤ 0.001 %
Co (Cobalt) ≤ 0.0005 %
Fe (Iron) ≤ 0.0005 %
K (Potassium) ≤ 0.0005 %
Mg (Magnesium) ≤ 0.0005 %
Na (Sodium) ≤ 0.005 %
Zn (Zinc) ≤ 0.0005 %
NH4 (Ammonium) ≤ 0.01 %
Foreign amino acids ≤ 0.3 %
Other ninhydrine positive substances ≤ 0.1 %
Loss on drying (105 °C; 3 h) ≤ 0.3 %