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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

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      1028380100
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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
              Catalog Number GTIN
              1028380025 04022536037363
              1028380100 04022536037370
              1028381000 04022536037387