Description

4-Amino-6-[[4-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Thio]Phenyl]Azo]-5-Hydroxy-3-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, complex azo dye intermediate and specialty chemical. This compound matters for its role in synthesizing high-value, colorfast dyes and pigments with specific optical properties. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to develop advanced coloring agents.

Application

• Key intermediate for the synthesis of high-performance azo dyes and pigments.
• Used in the production of dyes for textile fibers, including nylon, silk, and wool.
• Manufacture of colorants for inks, including specialty printing and packaging inks.
• Potential use in the formulation of functional dyes for optical applications and sensors.
• Research and development of novel colored polymers and advanced materials.
• Production of dyes for leather and other specialty surface coatings.

Basic Information

Product Name	4-Amino-6-[[4-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Thio]Phenyl]Azo]-5-Hydroxy-3-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	85223-28-5
Molecular Formula	C40H28N10O7S3•xNa
Molecular Weight	Contact for details
Synonyms	Acid Black 234; C.I. 31741; Sodium 4-amino-6-{[4-({4-[(2,4-diaminophenyl)diazenyl]phenyl}sulfanyl)phenyl]diazenyl}-5-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonate; 4-Amino-6-[[4-[[4-[(2,4-diaminophenyl)diazenyl]phenyl]thio]phenyl]diazenyl]-5-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonic acid sodium salt; Black 234; Azo Black 234 Intermediate; 85223-28-5; 4-Amino-6-({4-[(4-{[2,4-diaminophenyl]azo}phenyl)thio]phenyl}azo)-5-hydroxy-3-(phenylazo)naphthalene-2,7-disulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our 4-Amino-6-[[4-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Thio]Phenyl]Azo]-5-Hydroxy-3-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and compositional integrity. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Contact for details

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