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HEPES (2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulphonic acid), anhydrous ≥99.5% for biopharmaceutical production
HEPES (2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulphonic acid), anhydrous ≥99.5% for biopharmaceutical production
Supplier:  VWR Chemicals
Certificates
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HEPES (2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulphonic acid), anhydrous ≥99.5% for biopharmaceutical production
Supplier:  VWR Chemicals
Certificates

Specifications

  • Environmentally Preferable:

Specifications

Specification Test Results

  • Assay:
    Min. 99.5 %
  • Appearance:
    White crystalline powder
  • Cell culture toxicity:
    Passes test
  • DNases:
    Not detected
  • Identification by IR:
    Conforms to structure
  • Proteases:
    Not detected
  • RNases:
    Not detected
  • Solubility (1 mol/l):
    Clear.colourless.complete
  • pKa (20°C):
    7.45 - 7.65
  • Heavy metals (as Pb):
    Max. 5 ppm
  • Ignition residue:
    Max. 0.3 %
  • Water:
    Max. 0.5 %
  • Ca (Calcium):
    Max. 5 ppm
  • Cu (Copper):
    Max. 5 ppm
  • Fe (Iron):
    Max. 5 ppm
  • Mg (Magnesium):
    Max. 5 ppm
  • Mn (Manganese):
    Max. 5 ppm
  • Absorbance (260 nm) (1 mol/l):
    Max. 0.10
  • Absorbance (280 nm) (1 mol/l):
    Max. 0.10
  • Bioburden:
    Max. 100 CFU/g
  • Endotoxin (0,2 %):
    Max. 0.1 EU/mg

Specification Test Results

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