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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 Spec Table

CAS #Empirical Formula
52-90-4C₃H₇N O₂S

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      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 13
      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
      Catalogue Number GTIN
      1028380025 04022536037363