Description

Diammonium 6-Acetamido-4-Hydroxy-3-[(3-Phosphonatophenyl)Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate characterized by its phosphonated aromatic structure, which imparts excellent chelating properties and stability. This compound is essential for manufacturers requiring precise colorants and functional additives with strong metal-binding capabilities for demanding technical applications. It is primarily utilized in the production of specialized dyes and pigments for the textile, ink, and advanced materials sectors, where consistent quality and reliable performance are critical.

Application

• Textile Dyeing: Serves as a key intermediate for synthesizing high-performance, metal-complex dyes for nylon, wool, and silk, offering enhanced wash and light fastness.
• Inkjet Inks: Used in the formulation of specialty inks where the phosphonate group improves solubility and stability, preventing nozzle clogging.
• Functional Pigments: Acts as a chelating agent in pigments for coatings and plastics, improving dispersion and color strength.
• Analytical Reagents: Employed as a colorimetric reagent or indicator in analytical chemistry for the detection of specific metal ions.
• Research & Development: A valuable building block in organic synthesis for creating novel azo compounds with tailored properties for material science.
• Paper Coloring: Used in the production of specialty papers requiring dyes with good affinity and minimal environmental impact.

Basic Information

Product Name	Diammonium 6-Acetamido-4-Hydroxy-3-[(3-Phosphonatophenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	83803-78-5
Molecular Formula	C18H19N5O9PS . 2NH3
Molecular Weight	Approx. 555.42 g/mol (Free acid form)
Synonyms	6-Acetamido-4-hydroxy-3-[(3-phosphonatophenyl)azo]naphthalene-2-sulphonic acid, diammonium salt; Azo Dye Intermediate 83803-78-5; Phosphonated Azo Dye Salt; C.I. Acid Red (related derivatives); Diammonium 3-[(3-phosphonophenyl)azo]-6-acetamido-4-hydroxynaphthalene-2-sulphonate; 3-[(3-Phosphonophenyl)azo]-4-hydroxy-6-acetamidonaphthalene-2-sulphonic Acid Diammonium Salt; Azo Phosphonate Dye; Water-Soluble Azo Dye Intermediate
EINECS	Contact for details

Quality Control

Every batch of Diammonium 6-Acetamido-4-Hydroxy-3-[(3-Phosphonatophenyl)Azo]Naphthalene-2-Sulphonate is manufactured under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards. 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble
pH (1% Solution)	6.0 - 8.0

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