Description

Disodium 3-[[2-(Acetylamino)-4-Aminophenyl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing specialized dyes and pigments, offering excellent color properties and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Key starting material for the synthesis of acid dyes and direct dyes used in textile coloration.
• Specialty Ink Production: Used in formulating high-performance inks for packaging, security printing, and digital applications.
• Pigment Manufacturing: Serves as a precursor in the production of organic pigments for plastics, coatings, and masterbatches.
• Research & Development: Employed in chemical research for developing novel chromophores and functional dyes.
• Biological Staining: Potential use in the preparation of histological stains and biological markers in laboratory settings.
• Analytical Chemistry: Can be utilized as a reagent or standard in analytical methods for dye analysis and quality control.

Basic Information

Item	Details
Product Name	Disodium 3-[[2-(Acetylamino)-4-Aminophenyl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	60958-45-4
Molecular Formula	C20H15N4Na2O8S2
Molecular Weight	556.46 g/mol
Synonyms	Acid Orange 156; C.I. 26501; Disodium 6-Acetamido-4-[(1,5-disulfo-2-naphthyl)azo]-m-phenylenediamine; 3-[[2-(Acetylamino)-4-Aminophenyl]azo]-1,5-Naphthalenedisulfonic Acid Disodium Salt; 1,5-Naphthalenedisulfonic Acid, 3-[[2-(Acetylamino)-4-Aminophenyl]azo]-, Disodium Salt; Azo Dye Intermediate 60958-45-4; C.I. Acid Orange 156; Direct Orange S
EINECS	Contact for details

Quality Control

Our Disodium 3-[[2-(Acetylamino)-4-Aminophenyl]Azo]Naphthalene-1,5-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. 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 heat. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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