Description

Diammonium 7-Acetamido-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing vibrant and stable acid dyes and reactive dyes. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance colorants with excellent fastness properties. The product is supplied with a CAS Number of 96846-68-3.

Application

• Primary intermediate for the synthesis of acid dyes used in wool, silk, and nylon coloring.
• Key building block in the production of high-quality reactive dyes for cotton and cellulose fibers.
• Used in the manufacture of dyes for leather finishing and treatment.
• Precursor for dyes applied in paper coloration and specialty coatings.
• Intermediate in the production of colorants for inks, including jet printing inks.
• Used in research and development for novel functional dyes and pigments.

Basic Information

Item	Detail
Product Name	Diammonium 7-Acetamido-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	96846-68-3
Molecular Formula	C30H26N6O9S2 · 2(NH3)
Molecular Weight	Contact for details
Synonyms	Acid Red 337 (Diammonium Salt); C.I. 17200; 7-Acetamido-4-hydroxy-3-[[4-[(4-sulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonic acid, diammonium salt; Diammonium 4-hydroxy-3-((4-((4-sulfonatophenyl)diazenyl)phenyl)diazenyl)-7-acetamidonaphthalene-1-sulfonate; Azo Dye Intermediate 96846-68-3; Reactive Dye Precursor; Leather Black Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of Diammonium 7-Acetamido-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and solubility. Our quality system is designed to meet the exacting standards of the global dye manufacturing industry.

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 after opening to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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