Description

5-(4-Hydroxyanilino)-8-(4-Methylanilino)-1-Naphthalenesulfonic Acid is a specialized naphthalene sulfonic acid derivative with a unique dual-anilino substitution pattern. This compound matters as a versatile chemical intermediate and functional dye precursor, valued for its ability to impart specific optical and chemical properties. It is primarily needed by manufacturers in the dyes and pigments, advanced material science, and specialty chemical synthesis sectors.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing azo dyes, acid dyes, and other complex colorants, particularly where lightfastness and specific hue properties are required.
• Functional Material Synthesis: Used in the production of advanced materials, including optical brighteners, fluorescent markers, and non-linear optical (NLO) materials.
• Chemical Research & Development: Serves as a valuable reagent in organic synthesis for creating novel sulfonated aromatic compounds with tailored properties.
• Analytical Chemistry: Potential use as a chromogenic agent or complexing ligand in specific analytical and sensing applications.
• Polymer Modification: Can be incorporated into polymers to introduce sulfonic acid groups, modifying solubility, dyeability, or ionic characteristics.

Basic Information

Product Name	5-(4-Hydroxyanilino)-8-(4-Methylanilino)-1-Naphthalenesulfonic Acid
CAS No.	6362-22-7
Molecular Formula	C23H20N2O4S
Molecular Weight	420.48 g/mol
Synonyms	5-[(4-Hydroxyphenyl)amino]-8-[(4-methylphenyl)amino]-1-naphthalenesulfonic acid; 8-(p-Toluidino)-5-(p-anilinophenol)-1-naphthalenesulfonic acid; 1-Naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-[(4-methylphenyl)amino]-; Acid Black 107 (related dye class); C.I. 15711; Dual-substituted naphthalenesulfonic acid aniline derivative
EINECS	Contact for details

Quality Control

Our 5-(4-Hydroxyanilino)-8-(4-Methylanilino)-1-Naphthalenesulfonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) upon request, detailing key parameters such as assay, impurity profile, and physical characteristics to support your quality assurance protocols.

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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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