Eriochrome Black A
AR
- Product Code: 98676
CAS:
3618-58-4
| Molecular Weight: | 461.38 g./mol | Molecular Formula: | C₂₀H₁₂N₃NaO₇S |
|---|---|---|---|
| EC Number: | MDL Number: | MFCD00054390 | |
| Melting Point: | Boiling Point: | ||
| Density: | Storage Condition: | room temperature |
Product Description:
Eriochrome Black A 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. It forms distinct color changes when it binds to these metal ions, making it valuable in water hardness testing and analytical chemistry. Additionally, it is employed in dyeing processes for textiles, where it acts as a mordant dye to enhance color fastness on fabrics. Its ability to chelate metal ions also makes it useful in certain industrial applications, including metal ion detection and separation processes.
Product Specification:
| Test | Specification |
|---|---|
| APPEARANCE | Deep yellow red - Black Crystal - Powder Solid |
| LAMBDA MAX. | 518.0 to 522.0 nm(Hydroxylamine HCl(0.1%) MeOH sol) |
| ABSORBANCEE1 1CM | min. 175(Hydroxylamine HCl(1%) MeOH sol 518.0 to 522.0 nm) |
| Drying loss | 0-2 |
Sizes / Availability / Pricing:
| Size (g) | Availability | Price | Quantity |
|---|---|---|---|
| 5.000 | 10-20 days | $60.11 |
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Eriochrome Black A
Eriochrome Black A 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. It forms distinct color changes when it binds to these metal ions, making it valuable in water hardness testing and analytical chemistry. Additionally, it is employed in dyeing processes for textiles, where it acts as a mordant dye to enhance color fastness on fabrics. Its ability to chelate metal ions also makes it useful in certain industrial applications, including metal ion detection and separation processes.
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