Description

4-Amino-1-Naphthalenesulfonic Acid Sodium Salt is a high-purity, water-soluble sodium salt derivative of naphthalene, serving as a critical intermediate in advanced organic synthesis. Its value lies in its functional amino and sulfonate groups, which make it a versatile building block for creating complex molecules with specific properties. This compound is essential for manufacturers and R&D laboratories in the pharmaceutical, dye, and specialty chemical industries seeking reliable, high-quality intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a naphthalene sulfonate backbone.
• Dye and Pigment Manufacturing: Used in the production of azo dyes and other colorants, where it acts as a diazo component or a coupling agent to create vibrant, stable colors.
• Chemical Research & Development: Serves as a versatile building block in organic synthesis for creating novel compounds in academic and industrial research settings.
• Analytical Reagent: Employed in certain analytical methods and as a standard or reagent in laboratory testing procedures.
• Specialty Surfactant Synthesis: Functions as an intermediate for producing specialized surfactants and dispersants with unique solubility characteristics.
• Photographic Chemical: Can be utilized in the formulation of certain photographic chemicals and sensitizers.

Basic Information

Product Name	4-Amino-1-Naphthalenesulfonic Acid Sodium Salt
CAS No.	123333-48-2
Molecular Formula	C₁₀H₈NNaO₃S
Molecular Weight	245.23 g/mol
Synonyms	1-Naphthylamine-4-sulfonic Acid Sodium Salt; Sodium 4-Amino-1-naphthalenesulfonate; 4-Amino-1-naphthalenesulfonate Sodium Salt; 1-Aminonaphthalene-4-sulfonic Acid Sodium Salt; 4-Amino-1-naphthalenesulphonic Acid Sodium Salt; 4-Amino-1-naphthalenesulfonic Acid Na Salt; 4-Amino-1-naphthalenesulfonic Acid, Monosodium Salt
EINECS	Contact for details

Quality Control

Our 4-Amino-1-Naphthalenesulfonic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA), detailing purity, identity, and impurity profiles, is provided with each shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
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.