Description

Disodium 5-(Acetylamino)-4-Hydroxy-3-[(o-Tolyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate essential for producing vibrant and stable colorants. Its primary value lies in its role as a key precursor for manufacturing specialized dyes and pigments, offering excellent chromophore properties and solubility. This compound is critically needed by manufacturers in the textile, ink, and specialty chemical industries seeking to develop high-performance color products with specific fastness and application characteristics.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of high-value azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics requiring specific color shades and stability.
• Research & Development: Employed in chemical R&D labs for developing novel chromophores and studying dye chemistry.
• Analytical Chemistry: Can be utilized as a standard or reagent in colorimetric analysis and other laboratory procedures.

Basic Information

Item	Details
Product Name	Disodium 5-(Acetylamino)-4-Hydroxy-3-[(o-Tolyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	6441-93-6
Molecular Formula	C25H19N3Na2O9S2
Molecular Weight	623.54 g/mol
Synonyms	Acid Red 35 (C.I. 18065); Disodium 5-acetamido-4-hydroxy-3-(2-methylphenyl)azo)naphthalene-2,7-disulphonate; C.I. 18065; 5-Acetamido-4-hydroxy-3-[(2-methylphenyl)azo]-2,7-naphthalenedisulfonic acid disodium salt; o-Tolylazo dye intermediate; Azo dye intermediate 6441-93-6
EINECS	229-233-8

Quality Control

Our Disodium 5-(Acetylamino)-4-Hydroxy-3-[(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. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles 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 and sources of ignition. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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