Description

7-Amino-1,3,6-Naphthalenetrisulfonic Acid Dipotassium Salt is a high-purity, water-soluble aromatic intermediate characterized by its three sulfonic acid groups and a reactive amino moiety. This compound is valued for its strong chelating properties and its role as a critical building block in the synthesis of complex dyes and fluorescent whitening agents. It is primarily sought after by manufacturers in the specialty chemicals, textile dye, and optical brightener industries for producing high-performance products.

Application

• Fluorescent Whitening Agent (FWA) Synthesis: A key precursor for manufacturing optical brighteners used in paper, detergents, and textiles.
• Reactive and Acid Dye Intermediate: Serves as a fundamental building block for creating vivid, colorfast dyes for nylon, wool, and silk.
• Chelating Agent Production: Utilized in the formulation of metal-complexing agents for water treatment and industrial cleaning processes.
• Biochemical Research: Used in the development of fluorescent probes and markers for diagnostic applications.
• Photographic Chemical: Employed in the synthesis of certain photographic sensitizers and chemicals.
• Polymer Modification: Acts as a functional monomer or additive to introduce sulfonate groups into polymers for enhanced solubility or ionic character.

Basic Information

Product Name	7-Amino-1,3,6-Naphthalenetrisulfonic Acid Dipotassium Salt
CAS No.	84852-23-3
Molecular Formula	C₁₀H₇K₂NO₉S₃
Molecular Weight	483.55 g/mol
Synonyms	7-Amino-1,3,6-naphthalenetrisulfonic acid dipotassium salt; 1,3,6-Naphthalenetrisulfonic acid, 7-amino-, dipotassium salt; Dipotassium 7-amino-1,3,6-naphthalenetrisulfonate; K salt of 7-Amino-1,3,6-NTSA; 7-Amino-1,3,6-NTSA dipotassium salt; Aminonaphthalenetrisulfonic acid potassium salt; Fluorescent brightener intermediate
EINECS	Contact for details

Quality Control

Our 7-Amino-1,3,6-Naphthalenetrisulfonic Acid Dipotassium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with each 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). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellowish to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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