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102838 L-Cysteine

L-Cysteine for biochemistry. CAS 52-90-4, pH 4.5 - 5.5 (100 g/l, H₂O, 20 °C).

L-Cysteine MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: a-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid

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102838
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Overview

Replacement Information

Key Specifications Table

CAS #Empirical Formula
52-90-4C₃H₇N O₂S

Products

Catalog NumberPackaging Qty/Pack
1028380025 Plastic bottle 25 g
1028380100 Plastic bottle 100 g
1028381000 Plastic bottle 1 kg
Description
Catalogue Number102838
Synonymsa-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid
References
Product Information
CAS number52-90-4
EC number200-158-2
Hill FormulaC₃H₇N O₂S
Molar Mass121.16 g/mol
HS Code2930 90 12
Structure formula ImageStructure formula Image
Quality LevelMQ100
Applications
ApplicationL-Cysteine for biochemistry. CAS 52-90-4, pH 4.5 - 5.5 (100 g/l, H₂O, 20 °C).
Biological Information
Physicochemical Information
Density1.66 g/cm3 (45 °C)
Ignition temperature420 °C
Melting Point>203 °C
pH value4.5 - 5.5 (100 g/l, H₂O, 20 °C)
Bulk density300 kg/m3
Solubility280 g/l
Dimensions
Materials Information
Toxicological Information
LD 50 oralLD50 Rat 1890 mg/kg
Safety Information according to GHS
RTECSHA1600000
Storage class10 - 13 Other liquids and solids
WGKWGK 1 slightly hazardous to water
Disposal3
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
Categories of dangerharmful
Product Usage Statements
Storage and Shipping Information
StorageStore below +30°C.
Packaging Information
Transport Information
Supplemental Information
Specifications
Assay (perchloric acid titration, calculated on dried substance)≥ 99.0
Identity (IR-spectrum)passes test
Appearancecolorless to white, needle-shaped crystals
Appearance of solution (100 g/l, hydrochloric acid  2 mol/l)clear and colorless
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 1 mol/l, calc. on dried substance)+8.3 to +9.5
pH (25 g/l; CO₂-free water)4.5 - 5.5
Chloride (Cl)≤ 0.04 %
Sulfate (SO₄)≤ 0.03 %
Heavy metals (as Pb)≤ 0.001 %
As (Arsenic)≤ 0.0001 %
Ca (Calcium)≤ 0.001 %
Co (Cobalt)≤ 0.0005 %
Fe (Iron)≤ 0.001 %
K (Potassium)≤ 0.0005 %
Mg (Magnesium)≤ 0.0005 %
Na (Sodium)≤ 0.01 %
NH₄ (Ammonium)≤ 0.02 %
Zn (Zinc)≤ 0.0005 %
Foreign amino acids≤ 0.5 %
Other ninhydrine positive substances≤ 0.1 %
Loss on drying (105 °C; 3 h)≤ 0.5 %
Global Trade Item Number
Catalog Number GTIN
1028380025 04022536037363
1028380100 04022536037370
1028381000 04022536037387