Description

4-Amino-2,6-Naphthalenedisulfonic Acid is a high-purity, functionalized naphthalene derivative essential for advanced organic synthesis. This compound serves as a critical intermediate for the production of dyes, pigments, and specialty chemicals, offering precise reactivity for sulfonation and amination pathways. It is primarily required by manufacturers in the dyestuff, pharmaceutical intermediate, and fine chemical research sectors.

Application

• Key intermediate in the synthesis of acid dyes and reactive dyes for textiles.
• Building block for manufacturing high-value pigments and optical brighteners.
• Precursor in pharmaceutical research for creating sulfonated drug candidates.
• Used in the development of specialty chemicals and functional polymers.
• Intermediate for agrochemicals and other fine chemical products.
• Research and development applications in academic and industrial laboratories.

Basic Information

Product Name	4-Amino-2,6-Naphthalenedisulfonic Acid
CAS No.	6362-05-6
Molecular Formula	C₁₀H₉NO₆S₂
Molecular Weight	303.31 g/mol
Synonyms	2,6-Naphthalenedisulfonic acid, 4-amino-; 4-Amino-2,6-naphthalenedisulfonic acid; 2,6-Disulfo-4-naphthylamine; 4-Amino-2,6-naphthalene disulfonic acid; 6-Amino-1,5-naphthalenedisulfonic acid; 4-Amino-2,6-NDSA; 4-Amino-2,6-naphthalene disulphonic acid; 4-Amino-2,6-naphthalenedisulphonic acid
EINECS	228-870-7

Quality Control

Our 4-Amino-2,6-Naphthalenedisulfonic Acid is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee compliance with your technical requirements.

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 quality and stability.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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