Description

8-Methylnaphthalene-2-Sulfonic Acid is a specialized aromatic sulfonic acid derivative that serves as a high-value intermediate in advanced organic synthesis. Its molecular structure makes it a critical precursor for synthesizing dyes, pigments, and functional materials where specific substitution patterns are required. This compound is essential for R&D and production within the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop novel compounds with tailored properties.

Application

• Dye and Pigment Intermediate: A key building block for the synthesis of naphthalene-based acid dyes, reactive dyes, and high-performance pigments.
• Pharmaceutical Synthesis: Used as a sulfonating agent and intermediate in the production of certain active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Manufacturing: Employed in the synthesis of herbicides, fungicides, and other crop protection agents that require a naphthalene sulfonate backbone.
• Chemical Research & Development: Serves as a versatile reagent for introducing the 8-methylnaphthalene-2-sulfonyl moiety into more complex molecular architectures.
• Surfactant and Dispersant Precursor: Can be further processed to create specialized surfactants or dispersing agents for industrial applications.
• Polymer Modification: Used to functionalize polymers or as a monomer in the creation of sulfonated polymers with specific ionic properties.

Basic Information

Product Name	8-Methylnaphthalene-2-Sulfonic Acid
CAS No.	691359-61-2
Molecular Formula	C₁₁H₁₀O₃S
Molecular Weight	222.26 g/mol
Synonyms	2-Naphthalenesulfonic acid, 8-methyl-; 8-Methyl-2-naphthalenesulfonic acid; 8-Methylnaphthalene-2-sulphonic acid; 2-Sulfo-8-methylnaphthalene; 8-Methyl-2-sulfonaphthalene; 8-Methyl-β-naphthalenesulfonic acid
EINECS	Contact for details

Quality Control

Every batch of 8-Methylnaphthalene-2-Sulfonic Acid is manufactured and tested under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

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) and should be kept under dry conditions to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Sulfated Ash	≤ 0.1%

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