Description

3-Hydroxy-4-[[4-[(4-Phenylamino-3-Sodiosulfophenyl)Azo]-1-Naphthalenyl]Azo]Naphthalene-1-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart vibrant and stable color properties in advanced formulations. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for the synthesis of high-performance dyes and pigments.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of acid, direct, and reactive dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, offering excellent color strength.
• Specialty Colorants: Employed in the formulation of specialized colorants for non-textile applications, including biological stains and indicators.
• Research & Development: Serves as a critical reagent in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Product Name	3-Hydroxy-4-[[4-[(4-Phenylamino-3-Sodiosulfophenyl)Azo]-1-Naphthalenyl]Azo]Naphthalene-1-Sulfonic Acid Sodium Salt
CAS No.	6406-65-1
Molecular Formula	C32H21N5O7S2•2Na
Molecular Weight	713.66 g/mol
Synonyms	Acid Red 299; C.I. 18130; Sodium 3-hydroxy-4-[[4-[(4-phenylamino-3-sulfonatophenyl)azo]-1-naphthyl]azo]naphthalene-1-sulfonate; 1-Naphthalenesulfonic acid, 3-hydroxy-4-[[4-[(4-(phenylamino)-3-sulfophenyl)azo]-1-naphthalenyl]azo]-, sodium salt (1:2); Azo dye intermediate 6406-65-1; Direct Red 299; 3-Hydroxy-4-[[4-[(4-anilino-3-sulfophenyl)azo]-1-naphthyl]azo]-1-naphthalenesulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our production of 3-Hydroxy-4-[[4-[(4-Phenylamino-3-Sodiosulfophenyl)Azo]-1-Naphthalenyl]Azo]Naphthalene-1-Sulfonic Acid Sodium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and purity. The material is manufactured under a GMP-compliant quality management system and is supported by comprehensive analytical documentation. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment upon request.

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). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, containers should be opaque or stored in darkness to maintain product integrity.

Specification

Item	Specification
Appearance	Dark red to 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)	Clear, complete solution

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