Description

2-(p-Toluidino)Naphthalene-6-Sulfonic Acid Sodium Salt is a high-purity, water-soluble organic salt widely used as a key intermediate and functional additive. Its value lies in its specific chemical structure, which provides excellent chromophoric and complexing properties for demanding industrial applications. This product is essential for manufacturers in the dye, pigment, and specialty chemical synthesis sectors seeking reliable quality and consistent performance.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of acid dyes, reactive dyes, and organic pigments, particularly for textiles and inks.
• Fluorescent Whitening Agent (FWA) Production: Used in the manufacture of optical brighteners for paper, detergents, and textiles.
• Analytical Chemistry Reagent: Serves as a complexometric agent or indicator in specific titrimetric and spectrophotometric analyses.
• Specialty Chemical Synthesis: An important building block for creating more complex sulfonated aromatic compounds used in various high-value applications.
• Research & Development: Employed in academic and industrial R&D for developing new materials, sensors, or functional dyes.

Basic Information

Product Name	2-(p-Toluidino)Naphthalene-6-Sulfonic Acid Sodium Salt
CAS No.	53313-85-2
Molecular Formula	C17H14NNaO3S
Molecular Weight	335.35 g/mol
Synonyms	2-[(4-Methylphenyl)amino]naphthalene-6-sulfonic acid sodium salt; Sodium 2-(p-toluidino)-6-naphthalenesulfonate; 6-Sulfo-2-(p-toluidino)naphthalene sodium salt; 2-(4-Methylanilino)naphthalene-6-sulfonic acid sodium salt; Benzenesulfonic acid, 2-[(4-methylphenyl)amino]-6-sulfo-, sodium salt (1:1); C.I. 56205; Acid Yellow 59 (sodium salt form).
EINECS	Contact for details

Quality Control

Our 2-(p-Toluidino)Naphthalene-6-Sulfonic Acid Sodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. A Certificate of Analysis (COA) documenting key parameters is provided with every shipment to guarantee traceability and compliance with your quality 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). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details
Solubility (in Water)	Freely soluble

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