Description

6-Aminonaphthalene-1,3,5-Trisulphonic Acid is a key aromatic sulfonic acid derivative and a versatile organic intermediate. Its molecular structure, featuring both an amino group and multiple sulfonic acid groups, makes it a valuable building block for synthesizing complex dyes and functional chemicals. This compound is primarily sought after by manufacturers in the dyestuff, pigment, and specialty chemical industries for the production of acid dyes, reactive dyes, and optical brighteners.

Application

• Dye Intermediate: A critical precursor for the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of high-performance organic pigments that require specific solubility and chromophoric properties.
• Optical Brightener Synthesis: Serves as a key starting material for certain classes of fluorescent whitening agents (FWAs) used in paper, detergents, and plastics.
• Chemical Research: Employed as a specialized intermediate in organic synthesis and pharmaceutical research due to its polyfunctional nature.
• Corrosion Inhibitor Formulation: Can be utilized in the development of specialty corrosion inhibitors for industrial water treatment systems.
• Liquid Crystal & Electronic Materials: Investigated for potential use in the synthesis of advanced materials for electronic applications.

Basic Information

Product Name	6-Aminonaphthalene-1,3,5-Trisulphonic Acid
CAS No.	55524-84-0
Molecular Formula	C₁₀H₉NO₉S₃
Molecular Weight	383.37 g/mol
Synonyms	6-Amino-1,3,5-naphthalenetrisulfonic Acid; 1,3,5-Naphthalenetrisulfonic acid, 6-amino-; 6-Aminonaphthalene-1,3,5-trisulfonic acid; 6-Amino-1-naphthol-3,5-disulfonic acid (related); K acid (common industry name); Koch Acid; 6-Amino-1-naphthol-3,5,7-trisulfonic acid (tautomer); 8-Aminonaphthalene-1,3,6-trisulfonic acid (isomer)
EINECS	Contact for details

Quality Control

Our 6-Aminonaphthalene-1,3,5-Trisulphonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance for your synthesis processes. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

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 to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
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.