Description

4-[(2,4-Dihydroxyphenyl)Azo]-3-Hydroxynaphthalene-1-Sulphonic Acid is a specialized azo dye intermediate with a complex aromatic structure, valued for its ability to impart color and functional properties in advanced formulations. Its significance lies in its role as a key precursor for synthesizing high-performance dyes and pigments, offering excellent lightfastness and thermal stability. This compound is essential for manufacturers in the dyestuff, textile, and specialty chemical industries seeking to develop vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a crucial building block in the synthesis of complex, high-value azo dyes used in textiles, inks, and plastics.
• Textile Dyeing and Printing: Used to produce dyes that offer excellent wash and light fastness on natural and synthetic fibers.
• Functional Dye Manufacturing: A precursor for dyes used in specialized applications, including laser dyes, optical data storage, and non-linear optical materials.
• Analytical Chemistry Reagent: Can be employed as a chromogenic agent or complexometric indicator in specific analytical methods due to its distinct color change properties.
• Research & Development: Utilized in academic and industrial R&D for exploring new organic synthesis pathways and novel colorant molecules.

Basic Information

Product Name	4-[(2,4-Dihydroxyphenyl)Azo]-3-Hydroxynaphthalene-1-Sulphonic Acid
CAS No.	16623-47-5
Molecular Formula	C₁₆H₁₂N₂O₆S
Molecular Weight	360.34 g/mol
Synonyms	4-[(2,4-Dihydroxyphenyl)azo]-3-hydroxy-1-naphthalenesulfonic acid; 3-Hydroxy-4-[(2,4-dihydroxyphenyl)azo]-1-naphthalenesulfonic acid; 1-Naphthalenesulfonic acid, 4-[(2,4-dihydroxyphenyl)azo]-3-hydroxy-; Mordant Orange 6 (C.I. 26520); Acid Mordant Orange G; C.I. 26520; Alizarine Orange G; Diamond Orange G
EINECS	240-692-5

Quality Control

Our production of 4-[(2,4-Dihydroxyphenyl)Azo]-3-Hydroxynaphthalene-1-Sulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed against comprehensive specifications, including identity confirmation, assay, and impurity profile. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in alkaline aqueous solutions; slightly soluble in water

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