Description

o-Toluidine-4-Sulfonic Acid Sodium Salt is a high-purity, water-soluble sodium salt derivative of a key sulfonated aromatic amine. This compound serves as a versatile and critical intermediate and coupling agent in advanced organic synthesis, particularly valued for introducing sulfonate groups and facilitating diazotization reactions. It is primarily sought after by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for producing high-performance colorants and active ingredients.

Application

• Dye and Pigment Manufacturing: A crucial intermediate for synthesizing azo dyes, acid dyes, and reactive dyes, providing color fastness and specific hue properties.
• Pharmaceutical Intermediates: Used in the synthesis of sulfonamide-based drugs and other active pharmaceutical ingredients (APIs) requiring a sulfonate functional group.
• Agrochemical Synthesis: Serves as a building block for certain herbicides, fungicides, and plant growth regulators.
• Chemical Research & Development: Employed as a reagent in organic synthesis for coupling reactions and to modify solubility characteristics of target molecules.
• Photographic Chemicals: Can be used in the production of certain color couplers for photographic films and papers.
• Corrosion Inhibitors: Potential use as a component in formulations for metal surface treatment and protection.

Basic Information

Product Name	o-Toluidine-4-Sulfonic Acid Sodium Salt
CAS No.	63450-43-1
Molecular Formula	C7H8NNaO3S
Molecular Weight	209.20 g/mol
Synonyms	2-Methyl-4-aminobenzenesulfonic Acid Sodium Salt; 4-Amino-o-toluenesulfonic Acid Sodium Salt; Sodium 2-Methyl-4-aminobenzenesulfonate; Sodium 4-Amino-2-methylbenzenesulfonate; 2-Methylaniline-4-sulfonic Acid Sodium Salt; o-Toluidine-p-sulfonic Acid Sodium Salt; 4-Amino-2-methylbenzenesulfonic Acid Sodium Salt; 2-Methyl-4-sulfoaniline Sodium Salt
EINECS	Contact for details

Quality Control

Our o-Toluidine-4-Sulfonic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing including HPLC for purity, IR for identification, and loss on drying to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each 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 container tightly sealed in a dry environment to prevent absorption of moisture from the air.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Content (Karl Fischer)	≤ 1.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 0.5%

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