Description

6-(Ethylamino)-4-Hydroxynaphthalene-2-Sulfonic Acid is a specialized naphthalene derivative that serves as a key intermediate in the synthesis of high-value dyes and pigments. Its molecular structure, featuring both sulfonic acid and amino-hydroxy functional groups, provides excellent water solubility and chelating properties, making it crucial for developing colorants with specific fastness and hue characteristics. This compound is primarily utilized by manufacturers in the dye and pigment industry, as well as by research institutions focused on advanced material science and organic synthesis.

Application

• Dye Intermediate: A critical building block for the synthesis of azo dyes, acid dyes, and reactive dyes, particularly for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments that require high color strength and stability.
• Complexing Agent: Functions as a chelating agent in specific chemical processes and analytical applications due to its hydroxyl and amino groups.
• Research & Development: Serves as a valuable intermediate in organic synthesis for pharmaceutical and agrochemical research.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic chemicals and sensitizers.
• Corrosion Inhibitor Precursor: Acts as a starting material for synthesizing specialized corrosion inhibitors in industrial water treatment.

Basic Information

Product Name	6-(Ethylamino)-4-Hydroxynaphthalene-2-Sulfonic Acid
CAS No.	6259-51-4
Molecular Formula	C₁₂H₁₃NO₄S
Molecular Weight	267.30 g/mol
Synonyms	4-Hydroxy-6-(ethylamino)-2-naphthalenesulfonic acid; 6-Ethylamino-4-hydroxy-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 6-(ethylamino)-4-hydroxy-; 6-Aminoethyl-4-hydroxynaphthalene-2-sulfonic acid; C.I. 37515; Ethyl J acid (common industry name); 6-Ethylamino-4-hydroxynaphthalene-2-sulfonic acid
EINECS	228-415-6

Quality Control

Our production of 6-(Ethylamino)-4-Hydroxynaphthalene-2-Sulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced techniques including HPLC and titration to confirm identity, assay, and impurity profiles. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment and are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled 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 performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to gray powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility (1% in Water)	Clear, yellow to brown solution

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