Eriochrome® Black T

biotech grade

  • Product Code: 52783
  CAS:    1787-61-7
Molecular Weight: 461.38 g./mol Molecular Formula: C₂₀H₁₂N₃NaO₇S
EC Number: 217-250-3 MDL Number: MFCD00003935
Melting Point: Boiling Point:
Density: 1.109 g/mL at 25 °C Storage Condition: room temperature
Product Description: Eriochrome® Black T is widely used as a metallochromic indicator in complexometric titrations, particularly for determining the concentration of metal ions such as calcium, magnesium, and other divalent cations in water hardness analysis. It forms colored complexes with these metal ions, typically producing a wine-red color, which transitions to blue when the metal ions are chelated by EDTA, signaling the titration endpoint. This makes it a crucial tool in analytical chemistry for water quality assessment and industrial processes where monitoring metal ion concentrations is essential. Additionally, it is employed in educational laboratories to teach principles of complexometric titrations due to its clear and distinct color change.
Product Specification:
Test Specification
APPEARANCE Brown to black powder
SOLUBILITY IN WATER Clarify c=0.1g/100mL (Not More Than a Faint Trace of Turbidity or Insoluble Matter
IGNITION RESIDUE AS SULFATE 20
Sizes / Availability / Pricing:
Size (g) Availability Price Quantity
25.000 10-20 days $14.16
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-
100.000 10-20 days $38.15
+
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500.000 10-20 days $152.58
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-
2500.000 10-20 days $596.97
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Eriochrome® Black T
Eriochrome® Black T is widely used as a metallochromic indicator in complexometric titrations, particularly for determining the concentration of metal ions such as calcium, magnesium, and other divalent cations in water hardness analysis. It forms colored complexes with these metal ions, typically producing a wine-red color, which transitions to blue when the metal ions are chelated by EDTA, signaling the titration endpoint. This makes it a crucial tool in analytical chemistry for water quality assessment and industrial processes where monitoring metal ion concentrations is essential. Additionally, it is employed in educational laboratories to teach principles of complexometric titrations due to its clear and distinct color change.
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