Description

n-Methylaniline-p-Sulfonic Acid is a key aromatic sulfonic acid derivative, primarily serving as a versatile intermediate in the synthesis of more complex organic molecules. Its value lies in its bifunctional structure, containing both a sulfonic acid group and a substituted aniline moiety, which makes it a crucial building block for dyes, pigments, and specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the dyestuff, pharmaceutical, and agrochemical sectors seeking to develop or produce sulfonated azo compounds and other fine chemicals.

Application

• Primary intermediate in the manufacture of acid dyes and azo pigments for textiles, leather, and inks.
• Key starting material for synthesizing sulfonated optical brightening agents (fluorescent whitening agents).
• Building block in pharmaceutical research for creating sulfonamide-based drug candidates and other bioactive molecules.
• Precursor in the production of agrochemicals, such as certain herbicides and fungicides.
• Used in the synthesis of liquid crystal materials and other advanced electronic chemicals.
• Employed as a corrosion inhibitor intermediate in specialty formulations.
• Research chemical for studying sulfonation reactions and reaction mechanisms in organic chemistry.

Basic Information

Product Name	n-Methylaniline-p-Sulfonic Acid
CAS No.	24447-99-2
Molecular Formula	C7H9NO3S
Molecular Weight	187.22 g/mol
Synonyms	4-(Methylamino)benzenesulfonic Acid; N-Methyl-4-aminobenzenesulfonic Acid; p-(Methylamino)benzenesulfonic Acid; Benzenesulfonic acid, 4-(methylamino)-; N-Methylaniline-4-sulfonic Acid; 4-Methylaminobenzenesulfonic Acid; N-Methyl-p-aminobenzenesulfonic Acid
EINECS	Contact for details

Quality Control

Our n-Methylaniline-p-Sulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, moisture content, and related substances. Our quality commitment ensures batch-to-batch consistency and reliability for your critical synthesis processes.

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

Specification

Item	Specification
Appearance	Off-white to light tan 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	≤ 0.5%

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