Eriochrome Black T ACS CAS: 1787-61-7 | MF: C20H12N3NaO7S | MW: 416.38, Buy now for reliable and reproducible results from Tristains at Chemical World.
Eriochrome Black T ACS (CAS No. 1787-61-7), also known as Mordant Black 11, is a high-purity metal-complexing azo dye marketed as a dark blue-black powder. The molecular formula of the compound is C20H12N3NaO7S and it has a good solubility in water and alcohol, but is freely soluble in most organic solvents. This dye is primarily applied as an indicator in procedures involving EDTA method of titration to measure water hardness properly. The American Chemical Society (ACS) has tested this product and finds it to meet their standards for chemical reagent grade; however, the user should determine the suitability for its specific application.
Applications
- Water Hardness Analysis: Common in the EDTA titration method for determining the concentration of calcium and magnesium ions in water analysis.
- Metal Ion Titration: Assists in the exact dosing of metal ions, helping to ensure analytical results will be accurate.
- Spectrophotometric and Colorimetric Testing: Can be used for laboratory testing to indicate metal ion concentration with predictable and repeatable results.
- Textile and Chemical Analysis: Ideal for water hardness testing and textile processing applications.
- Histology and Cytology: Sometimes used as a staining in histological and cytological tissue differentiation.
Key features
- Analytical Grade Purity: Produced under ACS standards to guarantee consistent high quality and the greatest purity.
- High Consistency: Yields reproducible and reliable results for most analytical methods.
- Precision in Measurement: Improves the precision of metal ion and water hardness analysis.Broad Application Range: Applicable for laboratory, water treating facilities, research institutes and industrial testing laboratories.
General Description
Eriochrome Black T ACS (CAS No. 1787-61-7) is an essential indicator dye for complexometric titrations, designed for professionals requiring high analytical precision. It is widely used in histology, cytology, microbiology, hematology, and biological research laboratories. As an ACS-grade reagent, it adheres to strict quality control protocols.
Chemical World supplies Eriochrome Black T ACS with assured quality and consistency. Comprehensive product details, specifications, and ordering guidance are available to support laboratory and industrial needs. For pricing inquiries and bulk purchase options, customers are encouraged to contact Chemical World directly for customized solutions and competitive rates.
About Brand
TriStains provides a marketplace for histology and biological stains, which is comprehensive enough to encompass the peculiar requirements of laboratories specializing in Histology, Cytology, Microbiology, and Hematology. With a reputation for exceeding quality expectations, TriStains performance is outstanding which allows for resolution of cell and tissue components fundamental to life sciences to be clearly visualized. Each product under TriStains series is validated for accuracy, reliability and consistency. TriStains, which manufactures and markets stains and indicators in various packing, offers laboratories turn key solutions for all their staining and indicator needs, improving accuracy in every experiment.
| Alternate Names | Mordant black 11 is also known as Eriochrome Black T. |
| Application | Mordant black 11 is a dye, potentially useful as a metal indicator, with a Color Index of 14645 and a Dye content of 55%. |
| CAS Number | 1787-61-7 |
| Molecular Weight | 461.38 |
| Molecular Formula: | C20H12N3NaO7S |
| Appearance | Powder |
| Physical State | Solid |
| Solubility | Soluble in water (1 g/l). |
| Storage | Store at room temperature |
| Melting Point | >300° C |
| Refractive Index | n20D 1.75 (Predicted) |
| IC50 | ATP phosphoribosyltransferase: IC50= 10 M (Mycobacterium tuberculosis) |
| pK Values | pKa: -1.1 (Predicted) |
SAFETY INFORMATION
| WGK Germany | 2 |
| RTECS | QK2197000 |
| PubChem CID | 5459296 |
| Merck Index | 14:3667 |
| MDL Number | MFCD00003935 |
| EC Number | 217-250-3 |
| Beilstein Registry | 4121162 |
| SMILES | C1=CC=C2C(=C1)C=CC(=C2O)NN=C3C4=C(C=C(C=C4)[N+](=O)[O-])C(=CC3=O)S(=O)(=O)[O-].[Na+] |
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