Description

Disodium 4-Amino-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate known for its complex molecular structure and vibrant color properties. This compound is critical for manufacturers requiring precise and stable chromophores for advanced applications. It is primarily utilized by producers in the specialty dyes and pigments industry, as well as in research and development for novel optical materials.

Application

• Primary Intermediate for High-Performance Dyes: Synthesis of specialized azo dyes for textiles, inks, and coatings requiring excellent lightfastness and color strength.
• Pigment Manufacturing: Used in the production of complex organic pigments for plastics, paints, and automotive finishes.
• Research & Development: Serves as a key building block in academic and industrial R&D for developing new colorants and functional dyes.
• Specialty Inks: Formulation of high-quality inks for security printing, packaging, and digital applications.
• Analytical Chemistry: Potential use as a reagent or standard in chromatographic and spectroscopic analysis due to its distinct structure.

Basic Information

Item	Detail
Product Name	Disodium 4-Amino-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	68400-36-2
Molecular Formula	C46H32N8Na2O11S2
Molecular Weight	974.88 g/mol
Synonyms	Direct Black 166 (C.I. 30026); C.I. Direct Black 166; Disodium 4-amino-5-hydroxy-3,6-bis[[4'-[2-(4-hydroxyphenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl]-2,7-naphthalenedisulfonate; 4-Amino-5-hydroxy-6-[[4'-[(4-hydroxyphenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonic acid disodium salt; Direct Black D-2RN; Amanil Black D-2RN
EINECS	Contact for details

Quality Control

Our production of Disodium 4-Amino-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure consistent purity, color value, and chemical identity. Certificates of Analysis (COA) detailing key specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

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

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content (Sulfated)	≤ 20.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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