Description

4-Hydroxy-6-Methylamino-2-Naphthalene Sulfonic Acid is a specialized naphthalene derivative that serves as a crucial intermediate in the synthesis of advanced colorants and functional materials. Its unique sulfonic acid and amino-hydroxy substitution pattern makes it a valuable building block for creating dyes and pigments with specific light-fastness and solubility properties. This compound is primarily sought by manufacturers in the dye and pigment industry, as well as by research institutions developing novel organic electronic materials or biochemical probes.

Application

• Primary Intermediate for Azo Dyes and Pigments: A key precursor in the synthesis of acid dyes, direct dyes, and reactive dyes used for textiles, leather, and paper.
• Functional Dye Synthesis: Used in the production of specialized dyes for liquid crystal displays (LCDs), ink-jet inks, and other high-tech applications requiring precise color properties.
• Research & Development: Serves as a starting material in organic synthesis for pharmaceuticals, agrochemicals, and novel organic semiconductors.
• Biochemical Staining Agents: Potential use in the development of histological stains or fluorescent markers due to its aromatic structure.
• Corrosion Inhibitor Formulations: Can be incorporated into formulations where its aromatic sulfonic acid structure contributes to metal surface protection.

Basic Information

Product Name	4-Hydroxy-6-Methylamino-2-Naphthalene Sulfonic Acid
CAS No.	6259-53-6
Molecular Formula	C₁₁H₁₁NO₄S
Molecular Weight	253.27 g/mol
Synonyms	6-Methylamino-4-hydroxy-2-naphthalenesulfonic acid; 4-Hydroxy-6-(methylamino)-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 4-hydroxy-6-(methylamino)-; 6-Methylamino-4-hydroxynaphthalene-2-sulfonic acid; 4-Hydroxy-6-methylaminonaphthalene-2-sulfonic acid; H-Acid Methylamine Derivative; 1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid methylamine derivative (related)
EINECS	Contact for details

Quality Control

Our 4-Hydroxy-6-Methylamino-2-Naphthalene Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent batch-to-batch performance. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (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.