Description

3-[(4-Amino-2-Methoxyphenyl)Azo]-4-Hydroxy-6-[(3-Sulfophenyl)Amino]-2-Naphthalenesulfonic Acid is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its value lies in its complex molecular structure, which serves as a critical precursor for producing specialized dyes and pigments with enhanced color fastness and specific optical properties. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to develop advanced colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, water-soluble azo dyes for textile fibers, particularly polyamide and protein fibers like wool and silk.
• Specialty Ink Formulations: Used in the production of pigments for inks requiring specific solubility and stability profiles, including certain jet printing and security inks.
• Functional Dye Synthesis: A precursor for dyes used in non-textile applications such as lasers, optical data storage, and liquid crystal displays (LCDs).
• Research & Development: Employed in chemical research for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Biological Staining: Potential use in the synthesis of histological stains for microscopy, given its aromatic azo structure.

Basic Information

Product Name	3-[(4-Amino-2-Methoxyphenyl)Azo]-4-Hydroxy-6-[(3-Sulfophenyl)Amino]-2-Naphthalenesulfonic Acid
CAS No.	75627-19-9
Molecular Formula	C23H19N5O8S2
Molecular Weight	573.56 g/mol
Synonyms	Acid Red 299 (C.I. 18130); 2-Naphthalenesulfonic acid, 3-[(4-amino-2-methoxyphenyl)azo]-4-hydroxy-6-[(3-sulfophenyl)amino]-; 6-Amino-3-[(4-amino-2-methoxyphenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid, 3'-sulfoderivative; C.I. 18130; Azo dye intermediate AR-299; 3-[(4-Amino-2-methoxyphenyl)diazenyl]-4-hydroxy-6-[(3-sulfophenyl)amino]naphthalene-2-sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Amino-2-Methoxyphenyl)Azo]-4-Hydroxy-6-[(3-Sulfophenyl)Amino]-2-Naphthalenesulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet the exacting standards required for dye intermediate synthesis. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided with each shipment to guarantee traceability and support your quality assurance processes.

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 moisture absorption and degradation. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%
Solubility	Soluble in water and alkaline solutions

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