Description

7-Methylnaphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble organic salt derived from naphthalene sulfonation. This compound serves as a versatile and critical intermediate and functional additive in advanced chemical synthesis and industrial formulations. It is primarily required by manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries for producing high-performance materials.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, reactive dyes, and organic pigments, contributing to color fastness and solubility.
• Pharmaceutical Synthesis: Used as a sulfonation agent and intermediate in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Surfactant and Dispersant Manufacture: Acts as a precursor for anionic surfactants and high-efficiency dispersants used in agrochemicals and coatings.
• Electroplating Additives: Functions as a brightener and leveling agent in electroplating baths to improve metal deposit quality.
• Photographic Chemicals: Employed in the synthesis of chemicals used in photographic development processes.
• Research & Development: Serves as a standard or reagent in chemical research, particularly in organic synthesis and material science.

Basic Information

Product Name	7-Methylnaphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	51084-19-6
Molecular Formula	C11H9NaO3S
Molecular Weight	244.24 g/mol
Synonyms	Sodium 7-Methylnaphthalene-2-sulfonate; 2-Naphthalenesulfonic acid, 7-methyl-, sodium salt; 7-Methyl-2-naphthalenesulfonic acid sodium salt; 7-Methylnaphthalene-2-sulfonate sodium; 7-Methyl-2-naphthylsulfonic acid sodium salt; 2-Sulfo-7-methylnaphthalene sodium salt
EINECS	256-980-5

Quality Control

Our 7-Methylnaphthalene-2-Sulfonic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance. Certificates of Analysis (COA) documenting purity, identity, and impurity profiles are available for all commercial shipments to ensure full traceability and compliance with your specifications.

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 material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline 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)	Conforms
Solubility (in Water)	Clear, colorless solution

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