Description

5-(Acetylamino)-4-Hydroxy-3-[(3-Phosphonophenyl)Azo]Naphthalene-2,7-Disulphonic Acid is a specialized, high-purity azo dye intermediate with a unique phosphonated aromatic structure. This compound matters for its ability to impart specific colorant properties and chelating functionality, making it a critical building block for advanced, high-performance dyes and pigments. Industrial manufacturers and R&D laboratories in the textile, ink, and specialty chemical sectors require this precise intermediate to develop products with enhanced color fastness, stability, and application-specific performance.

Application

• Textile Dye Intermediate: A key precursor for synthesizing high-value, wash-fast azo dyes for natural and synthetic fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics, where the phosphonate group can improve substrate adhesion.
• Analytical Reagent: Serves as a chelating agent or colorimetric indicator in analytical chemistry for metal ion detection due to its azo and phosphonic acid functional groups.
• Research & Development: Employed in organic synthesis and material science research to develop novel functional dyes and metal-organic complexes.
• Laser Dye & Optical Material Precursor: Potential use in the synthesis of dyes for laser applications and non-linear optical materials.

Basic Information

Product Name	5-(Acetylamino)-4-Hydroxy-3-[(3-Phosphonophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	62346-00-3
Molecular Formula	C18H15N3O11PS2
Molecular Weight	544.42 g/mol
Synonyms	5-Acetamido-4-hydroxy-3-[(3-phosphonophenyl)azo]naphthalene-2,7-disulfonic acid; C.I. Mordant Yellow 5; Acid Mordant Yellow GG; Phosphonated Azo Dye Intermediate; 3-[(3-Phosphonophenyl)azo]-5-acetylamino-4-hydroxynaphthalene-2,7-disulfonic acid; Mordant Yellow 5; 62346-00-3 (CAS)
EINECS	Contact for details

Quality Control

Our production of 5-(Acetylamino)-4-Hydroxy-3-[(3-Phosphonophenyl)Azo]Naphthalene-2,7-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent performance. Certificates of Analysis (COA) detailing all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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