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Eriochrome Black T ACS
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Tristains

S10070

Eriochrome Black T ACS

CAS No
1787-61-7
Synonym(s)
Mordant Black 11
Molecular Formula:
C20H12N3NaO7S
Molecular Weight:
461.38
EC Number:
217-250-3
Colour Index Number:
14645
PubChem CID:
24888460
MDL number:
MFCD00003935
Specification SDS Available pack size: 1Kg, 100g
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Description

Eriochrome Black T ACS CAS: 1787-61-7 | MF: C20H12N3NaO7S | MW: 416.38, Buy now for reliable and reproducible results from Tristains.

Eriochrome Black T ACS (CAS No. 1787-61-7), commonly known as Mordant Black 11, is a metal-complexing azo dye available as a dark blue to black crystalline powder. With a molecular formula of C20H12N3NaO7S and a molecular weight of 416.38, this dye exhibits excellent solubility in water and alcohol while remaining insoluble in most organic solvents. Eriochrome Black T is extensively utilized as an indicator in EDTA complexometric titration methods, particularly for determining water hardness. The ACS grade certification confirms that this product meets the rigorous analytical standards established by the American Chemical Society, ensuring high purity, accuracy, and consistency. Its superior quality makes it suitable for analytical chemistry, laboratory testing, titration analysis, and selected textile applications.

Applications

  • Water Hardness Determination: Eriochrome Black T ACS is a commonly used indicator in EDTA-based titrations for determining water hardness by monitoring calcium, magnesium and other metal ions in industrial and environmental waters.
  • Titration of Metal Ions: The dye is an important indicator for metal ion titration, especially calcium and magnesium, ensuring accurate and reproducible laboratory results.
  • Spectrophotometry and Colorimetric Analysis: Uses Eriochrome Black T ACS is used for spectrophotometric and colorimetric measurements of the concentration of metal ions with good precision and accuracy.
  • Textiles and Analytical Industry: The dyestuff is used in the textile processing and analytical laboratories, where precise determination of metal ions and analysis for water quality is required.
  • Histological Staining: In histology and cytology, Eriochrome Black T ACS is sometimes utilized in selective staining of tissue sections to make distinctions among the different elements under a microscope.

Key features

  • ACS Certified Quality: Ensures high purity and compliance with analytical reagent standards.
  • Consistent Performance: Delivers reliable and repeatable results across analytical procedures.
  • Improved Analytical Accuracy: Enhances precision in metal ion detection and water hardness measurement.
  • Versatile Usage: Ideal for research laboratories, industrial analysis, and environmental monitoring.

General Description

Eriochrome Black T ACS (CAS 1787-61-7), a highly specific complexometric indicator dye for exact conditions in analytical chemistry. Best for labs of histology, cytology, microbiology and hematology; research laboratory applications. It is an ACS-grade reagent, suitable for use in many laboratory applications.

High-quality Eriochrome Black T ACS, Guaranteeing analytical grade purity, TriStain provides this product to meet the demands of laboratories for consumables. Complete product specifications, technical data and purchasing information can be obtained online to enhance the research and production applications. For bulk orders and pricing information on Eriochrome Black T ACS (CAS No. 1787-61-7), please contact TriStains directly to discuss your purchase quantity and any specific delivery requirements that you may have for this product.

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.

Additional information
Brand

Tristains

Size

100g, 1Kg

CAS No

1787-61-7

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TECHNICAL INFORMATION
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

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data (including water content).

Mordant Black 11 is a dye that may be useful as a metal indicator. Studies have also utilized Mordant Black 11 to study sorption on natural sediments. The Color Index of Mordant black 11 is 14645. Mordant black 11 has a Dye content 55%.

TECHNICAL INFORMATION

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

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
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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