Description

o-Toluidine-3-Sulphonic Acid is a key organic intermediate and sulfonating agent prized for its role in synthesizing complex molecules. Its value lies in introducing the sulfonic acid group, which can impart water solubility, alter reactivity, and serve as a precursor to dyes and pigments. This compound is essential for manufacturers in the agrochemical, dye, and specialty chemical industries seeking to develop new active ingredients or colorants.

Application

• Dye and Pigment Intermediate: A crucial building block in the synthesis of azo dyes, acid dyes, and other colorants, particularly for textiles and leather.
• Agrochemical Synthesis: Used as a key intermediate in the production of certain herbicides, fungicides, and other crop protection agents.
• Pharmaceutical Intermediate: Serves in the synthesis pathway for specific active pharmaceutical ingredients (APIs) and fine chemicals.
• Chemical Research & Development: Employed in organic synthesis laboratories for introducing sulfonic acid functionality into target molecules.
• Corrosion Inhibitor Precursor: Can be used in the formulation of specialty chemicals for metal surface treatment and protection.
• Photographic Chemical: Finds application in the synthesis of certain chemicals used in photographic development processes.

Basic Information

Product Name	o-Toluidine-3-Sulphonic Acid
CAS No.	6387-19-5
Molecular Formula	C7H9NO3S
Molecular Weight	187.22 g/mol
Synonyms	2-Methylaniline-3-sulfonic Acid; 3-Sulfo-2-methylaniline; 2-Amino-6-methylbenzenesulfonic Acid; 2-Methyl-3-aminobenzenesulfonic Acid; 3-Amino-2-methylbenzenesulfonic Acid; o-Toluidine-m-sulfonic Acid; 6-Methyl-2-aminobenzenesulfonic Acid
EINECS	228-977-3

Quality Control

Our o-Toluidine-3-Sulphonic Acid is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee consistency and support your quality assurance protocols.

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); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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