Description

4-[[[(5-Chloro-2-Hydroxyphenyl)Azo]Dihydroxyphenyl]Azo]Naphthalene-1-Sulphonic Acid, Sodium Salt is a high-purity azo dye intermediate and colorant. This compound is valued for its ability to impart specific, stable hues in demanding industrial applications, making it a critical component for manufacturers requiring precise color performance. It is primarily utilized by producers of pigments, specialty dyes, and advanced materials across the textile, ink, and plastics industries.

Application

• Primary intermediate for the synthesis of high-performance azo pigments and dyes.
• Colorant for specialty inks, including printing and packaging inks.
• Pigmentation of polymers and plastics to achieve specific color standards.
• Manufacturing of colorants for textile fibers and fabrics.
• Production of industrial coatings requiring light and chemical stability.
• Potential use in the formulation of functional dyes for non-textile applications.

Basic Information

Product Name	4-[[[(5-Chloro-2-Hydroxyphenyl)Azo]Dihydroxyphenyl]Azo]Naphthalene-1-Sulphonic Acid, Sodium Salt
CAS No.	93918-28-6
Molecular Formula	C22H14ClN4NaO5S
Molecular Weight	528.88 g/mol
Synonyms	Acid Red 404 (C.I. 18010); Sodium 4-[[4-[(5-chloro-2-hydroxyphenyl)azo]-2,5-dihydroxyphenyl]azo]naphthalene-1-sulfonate; C.I. 18010; 5-Chloro-2-hydroxy-4'-[(1-sulfo-4-naphthalenyl)azo][1,1'-azobenzene]-3,4'-diol, monosodium salt; Azo dye intermediate for red shades; 1-Naphthalenesulfonic acid, 4-[[4-[(5-chloro-2-hydroxyphenyl)azo]-2,5-dihydroxyphenyl]azo]-, sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo compound adheres to rigorous quality control protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed against stringent internal specifications, with comprehensive testing for identity, strength, and impurity profiles. A Certificate of Analysis (COA) detailing all relevant parameters is provided with every shipment to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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