Description

Disodium 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(o-Tolyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate known for its distinct chromophoric properties. This compound is critical for manufacturers requiring precise color development and excellent batch-to-batch consistency in demanding applications. It is primarily utilized by producers of specialized dyes, pigments, and colorants for the textile, ink, and advanced materials sectors.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance orange to red azo dyes and pigments.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Ink Manufacturing: Employed in formulating specialty inks for packaging, printing, and security applications.
• Functional Colorants: Potential use in the development of colorants for plastics, coatings, and advanced polymeric materials.
• Research & Development: A valuable chemical for R&D laboratories exploring new chromophores and dye chemistry.

Basic Information

Product Name	Disodium 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(o-Tolyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	85135-93-9
Molecular Formula	C29H20N6Na2O9S2
Molecular Weight	714.61 g/mol
Synonyms	4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[(2-methylphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt; C.I. 29160; Disodium 4-amino-5-hydroxy-3-(4-nitrophenylazo)-6-(o-tolylazo)naphthalene-2,7-disulphonate; Azo dye intermediate 85135-93-9; 3-[(4-Nitrophenyl)azo]-4-amino-5-hydroxy-6-[(2-methylphenyl)azo]-2,7-naphthalenedisulfonic acid disodium salt; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[(2-methylphenyl)azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(o-Tolyl)Azo]Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications, including identity, purity, and color strength. Certificates of Analysis (COA) documenting these results 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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (Water)	Soluble

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