Bathophenanthrolinedisulfonic acid, disodium salt

Bathophenanthrolinedisulfonic acid, disodium salt

Metal Indicator

  • Product code
    B004  Bathophenanthrolinedisulfonic acid, disodium salt
  • CAS No.
    20000
  • Chemical name
    348-00375
  • MW
    C24H14N2Na2O6S2=536.49
Unit size Price Item Code
1 g B004-10

Product Description

Bathophenanthrolinedisulfonic acid, disodium salt is a water-soluble derivative of Bathophenanthroline. It is insoluble in organic solvents. Its pKa1 and pKa2 are 2.83 and 5.20, respectively. Due to its high water solubility, Bathophenanthrolinedisulfonic acid can be used to detect Fe(II) in aqueous samples such as blood or biological fluids. The detection range of Fe2+ using Bathophenanthrolinedisulfonic acid is 0.25-4 ppm at 535 nm. The molar absorptivity of the complex is 2.24×104. The reduction and oxidation potential of FeL3 2+-FeL3 3+ in 1 M H2SO4 solution is reported to be 1.09 V. Cu+ can also be detected using Bathophenanthrolinedisulfonic acid. The maximum wavelength and molar absorptivity of the Cu+ complex is 483 nm and 1.23×104, respectively.

Chemical Structure

References

Open References

1. D. Blair, et al., Bathophenanthrolinedisulphonic Acid and Bathocuproinedisulphonic Acid, Water Soluble Reagents for Iron and Copper. Talanta. 1961;7:163-174

Handling and storage condition

Specification
Appearance: White to pale bright red or pale brown powder
Solubility in water: To pass test (clear, colorless)
Solubility in CH3COONa solution: To pass test (almost clear, colorless)
Absorbance (Iron blank): ≦0.010 (535 nm)
Absorbance (Iron complex): ≧0.500 (around 535 nm)
IR spectrum: Authentic
Handling and storage condition
Ambient temperature
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