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L-Cysteine

L-Cysteine
L-Cysteine
Product Code : LC1775
Product Description
LC1775 L-Cysteine
for biochemistry

 

Order number Packaging Quantity Price €
AC28775 Glass bottle 25 g 18.23
AC28775 Glass bottle 100 g 51.3
AC28775 Glass bottle 1 kg 378
AC28775 Glass bottle 10 kg Inquire

 

Product information
Synonyms a-Amino-ß-mercapto propionic acid
Hill Formula C3H7NO2S
HS Code 2930 90 13
EC number 200-158-2
Molar mass 121.16 g/mol
CAS number 52-90-4

 

Chemical and physical data
Ignition temperature 420 °C
Solubility 160 g/l (20 °C)
Melting point 220 - 228 °C
Molar mass 121.16 g/mol
Bulk density 300 kg/m3
pH value 4.5 - 5.5 (100 g/l, H2O, 20 °C)

 

Safety information according to GHS
Hazard Statement(s) H302: Harmful if swallowed.
Signal Word Warning
Hazard Pictogram(s)
RTECS HA1600000
Storage class 10 - 13 Other liquids and solids
WGK WGK 1 slightly water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

 

Safety information
R Phrase R 22
Harmful if swallowed.
Categories of danger harmful
Hazard Symbol Harmful

 

Toxicological data
LD 50 oral LD50 rat 1890 mg/kg

 

Specifications
Assay (perchloric acid titration, calculated on dried substance) ≥ 99.0 %
Identity (IR-spectrum) passes test
Appearance White, crystalline powder or colorless crystals.
Appearance of solution (0.5 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) +8.0° to +9.0°
UV-Absorption (280 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l) ≤ 0.5
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) ≤ 0.01 %
NH4 (Ammonium) ≤ 0.01 %
Zn (Zinc) ≤ 0.0005 %
Foreign amino acids ≤ 0.5 %
Other ninhydrine positive substances ≤ 0.1 %
Loss on drying (105 °C; 3 h) ≤ 0.3 %

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