Description

Sodium 5-[(4-Hydroxyphenyl)Azo]-8-[(2-Methoxyphenyl)Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its dual azo chromophore structure, which provides a versatile platform for synthesizing specific colorants with tailored properties for demanding applications. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to develop high-performance dyes and pigments.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles and leather.
• Specialty Ink Formulations: Used in the production of colorants for inks requiring specific solubility and color fastness properties.
• Functional Colorant Synthesis: A precursor for creating dyes with specialized functions, such as those used in biological staining or analytical indicators.
• Research & Development: Employed in chemical R&D for exploring new chromophores and dye-polymer interactions.
• Pigment Manufacturing: Can be utilized in the preparation of lake pigments or other insoluble colorants after further chemical modification.

Basic Information

Product Name	Sodium 5-[(4-Hydroxyphenyl)Azo]-8-[(2-Methoxyphenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	67906-52-9
Molecular Formula	C23H16N4NaO5S
Molecular Weight	475.45 g/mol
Synonyms	5-[(4-Hydroxyphenyl)azo]-8-[(2-methoxyphenyl)azo]naphthalene-2-sulfonic acid sodium salt; Sodium 8-(2-methoxyphenylazo)-5-(4-hydroxyphenylazo)naphthalene-2-sulphonate; Azo dye intermediate 67906-52-9; Disazo naphthalene sulfonate; CI 18800 (related class); Acid Orange 74 (related); Light-sensitive azo dye salt
EINECS	Contact for details

Quality Control

Our production of Sodium 5-[(4-Hydroxyphenyl)Azo]-8-[(2-Methoxyphenyl)Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR, UV-Vis), to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing all test results are available upon request.

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 such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

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	Contact for details
Heavy Metals (as Pb)	< 20 ppm
Solubility (Water)	Freely soluble

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