Eriochrome Red B
dye content 85%
- Product Code: 111696
Alias:
Ella chrome red B; Acid chrome red B, Ella chrome red B, acid chrome red B, media red 7, 4-[(4,5-dihydro-3-methyl-5-oxo-1-benzene Base-1H-pyrazol-4-yl)azo]-3-hydroxy-1-naphthalenesulfonic acid monosodium salt, acidic medium bay red BN
CAS:
3618-63-1
| Molecular Weight: | 446.41 g./mol | Molecular Formula: | C₂₀H₁₅N₄NaO₅S |
|---|---|---|---|
| EC Number: | MDL Number: | MFCD00004080 | |
| Melting Point: | Boiling Point: | ||
| Density: | Storage Condition: | room temperature |
Product Description:
Eriochrome Red B is primarily used as a metallochromic indicator in analytical chemistry, particularly in complexometric titrations. It is commonly employed to determine the endpoint in the titration of metal ions, such as calcium and magnesium, with ethylenediaminetetraacetic acid (EDTA). The indicator changes color from red to blue when it binds to metal ions, providing a clear visual signal for the completion of the reaction. This makes it a valuable tool in water hardness testing and other applications where precise measurement of metal ion concentrations is required. Additionally, it is used in dyeing processes for textiles, where it imparts specific colors to fabrics based on its interaction with metal ions.
Product Specification:
| Test | Specification |
|---|---|
| Absorbance (E1%1cm) | 300 |
| Drying Loss | 0-5 |
| Dye Content | 85-100 |
| Lambda Max (MeOH) | 458.0-466.0 |
| Appearance | Red Powder |
Sizes / Availability / Pricing:
| Size (g) | Availability | Price | Quantity |
|---|---|---|---|
| 25.000 | 10-20 days | $31.15 |
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| 100.000 | 10-20 days | $78.07 |
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| 500.000 | 10-20 days | $256.23 |
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Eriochrome Red B
Eriochrome Red B is primarily used as a metallochromic indicator in analytical chemistry, particularly in complexometric titrations. It is commonly employed to determine the endpoint in the titration of metal ions, such as calcium and magnesium, with ethylenediaminetetraacetic acid (EDTA). The indicator changes color from red to blue when it binds to metal ions, providing a clear visual signal for the completion of the reaction. This makes it a valuable tool in water hardness testing and other applications where precise measurement of metal ion concentrations is required. Additionally, it is used in dyeing processes for textiles, where it imparts specific colors to fabrics based on its interaction with metal ions.
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| Stable in pH range | - |
| Solubility | - |
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| INCI | - |
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