Description

Trisodium Bis[6-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2-Sulphonato(3-)]Chromate(3-) is a high-purity, complex chromium azo dye salt, valued for its intense color properties and chelating stability. This compound is essential for industries requiring precise and durable coloration in specialized applications. It is primarily sought by manufacturers in the pigments, advanced materials, and analytical reagent sectors.

Application

• Specialty Pigment Manufacturing: Used as a key intermediate or colorant for producing high-performance, complex inorganic pigments.
• Analytical Chemistry: Serves as a complexometric indicator or a chromogenic reagent in specific titrimetric and spectrophotometric analyses.
• Research & Development: Employed in the synthesis of novel coordination compounds and materials science research for its unique metal-complex structure.
• Dye Intermediates: Acts as a precursor for synthesizing other more complex azo dyes and functional colorants.
• Catalyst Preparation: Potential use in the preparation of supported chromium catalysts for specialized chemical processes.
• Educational & Laboratory Use: Supplied as a high-purity chemical for academic instruction and advanced laboratory experiments.

Basic Information

Product Name	Trisodium Bis[6-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2-Sulphonato(3-)]Chromate(3-)
CAS No.	74920-95-9
Molecular Formula	C32H16CrN10Na3O20S2 (Contact for exact confirmation)
Molecular Weight	Contact for details
Synonyms	Trisodium Chromate Bis(6-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]-2-Naphthalenesulfonate); C.I. Mordant Black 17, Trisodium Salt; Chromate(3-), trisodium bis[6-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]-2-naphthalenesulfonato(3-)]-; Acid Chrome Black T (related complex); Mordant Black 17; Trisodium 3-[(2-Hydroxy-3,5-dinitrophenyl)azo]-4-hydroxy-6-amino-2-naphthalenesulfonate Chromate; Azo Chromium Complex Dye
EINECS	Contact for details

Quality Control

Our Trisodium Bis[6-Amino-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2-Sulphonato(3-)]Chromate(3-) is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details
Solubility	Soluble in water

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.