Hydroxynaphthol blue
indicator for metal titration
- Product Code: 51986
Alias:
Hydroxynaphthol blue, 1-(2-hydroxy-4-sulfo-1-naphthazo)-2-naphthol-3,6-disulfonic acid trisodium salt, 4-hydroxy-2-(4-hydroxy -1-sulfo-2-naphthazo)naphthalene-2,7-disulfonic acid trisodium salt
CAS:
63451-35-4
Properties:
Maximum Wavelength: ~ 650 nm
| Molecular Weight: | 620.47 g./mol | Molecular Formula: | C₂₀H₁₁N₂Na₃O₁₁S₃ |
|---|---|---|---|
| EC Number: | 264-197-7 | MDL Number: | MFCD00036393 |
| Melting Point: | Boiling Point: | ||
| Density: | Storage Condition: | room temperature |
Product Specification:
| Test | Specification |
|---|---|
| LOSS ON DRYING | 0 6% |
| APPEARANCE | GREY TO DARK PURPLE POWDER |
| SENSITIVENESS TEST | PASS |
| SUITABILITY FOR Ca DETERMINATION | PASS |
| SOLUBILITY IN WATER 0.1 | CLEAR RED SOLUTION |
Sizes / Availability / Pricing:
| Size (g) | Availability | Price | Quantity |
|---|---|---|---|
| 1.000 | 10-20 days | ฿1,420.00 |
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| 5.000 | 10-20 days | ฿4,350.00 |
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| 10.000 | 10-20 days | ฿8,660.00 |
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| 25.000 | 10-20 days | ฿21,150.00 |
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| 100.000 | 10-20 days | ฿49,990.00 |
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| 500.000 | 10-20 days | ฿150,000.00 |
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Hydroxynaphthol blue
Hydroxynaphthol blue is widely used as a metallochromic indicator in complexometric titrations, particularly for the determination of calcium and magnesium ions in water hardness testing. It forms distinct color changes in the presence of these metal ions, making it a valuable tool in analytical chemistry. Additionally, it is employed in biochemical research for studying metal ion interactions with proteins and other biomolecules. Its ability to chelate metal ions also finds applications in industrial processes, such as in the treatment of wastewater to monitor and control metal ion concentrations.
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