Description

Methanesulfonic Acid Aniline is a high-purity organic salt formed from methanesulfonic acid and aniline, serving as a versatile intermediate and catalyst in advanced chemical synthesis. Its value lies in providing a stable, non-volatile source of both acidic and aniline-derived functional groups, enabling precise and efficient reactions. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking reliable performance in their production processes.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide and aniline-based drug molecules.
• Catalyst & Reagent: Acts as an efficient acid catalyst in organic synthesis, esterification, and polymerization reactions due to its strong acidity and thermal stability.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides where the aniline moiety is a critical structural component.
• Polymer Industry: Serves as a monomer or curing agent in the manufacture of specialty polymers, resins, and epoxy hardeners.
• Dye & Pigment Manufacturing: Intermediate for producing azo dyes and other complex colorants requiring sulfonic acid groups for solubility and fastness.
• Corrosion Inhibitor Formulation: Component in specialized industrial formulations designed to protect metal surfaces.
• Research & Development: Valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and material science.

Basic Information

Product Name	Methanesulfonic Acid Aniline
CAS No.	103-06-0
Molecular Formula	C7H11NO3S
Molecular Weight	189.23 g/mol
Synonyms	Anilinium methanesulfonate; Aniline methanesulfonate salt; Benzenaminium methanesulfonate; Methanesulfonic acid aniline salt; Aniline mesylate; Anilinium mesylate; MSAA
EINECS	203-074-1

Quality Control

Our Methanesulfonic Acid Aniline is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical testing, including assay, impurity profiling, and identity confirmation. A Certificate of Analysis (COA) detailing all test results is supplied with every shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use 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%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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