Description

2,6-Diaminotoluene-4-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of high-value organic compounds. Its primary commercial value lies in its dual functional groups, which make it an essential building block for creating complex molecules with specific optical and chemical properties. This product is critically needed by manufacturers in the dye and pigment, pharmaceutical, and advanced material sectors for producing colorants, active pharmaceutical ingredients (APIs), and specialty polymers.

Application

• Dye and Pigment Intermediate: A crucial precursor for the synthesis of azo dyes, acid dyes, and reactive dyes, imparting color fastness and specific hues to textiles, leather, and paper.
• Pharmaceutical Synthesis: Used as a building block in the manufacture of certain active pharmaceutical ingredients (APIs) and diagnostic agents, leveraging its aromatic amine and sulfonic acid functionalities.
• Optical Brightener Production: Serves as a key raw material in the manufacturing of fluorescent whitening agents (FWAs) used in detergents, plastics, and paper.
• Corrosion Inhibitor Formulation: Incorporated into specialty chemical formulations designed to protect metals in industrial cooling systems and other applications.
• Polymer Modification: Acts as a monomer or additive in the production of specialty polymers, including polyamides and ion-exchange resins, to modify solubility and thermal properties.
• Research & Development: Employed in organic synthesis laboratories for developing novel compounds in agrochemicals, material science, and chemical research.

Basic Information

Product Name	2,6-Diaminotoluene-4-Sulfonic Acid
CAS No.	98-25-9
Molecular Formula	C7H10N2O3S
Molecular Weight	202.23 g/mol
Synonyms	4-Amino-6-methyl-1,3-benzenedisulfonic Acid; 2,6-Diaminotoluene-4-sulfonic Acid; 2,6-Diamino-p-toluenesulfonic Acid; 4-Methyl-1,3-benzenediamine-6-sulfonic Acid; 2,6-Diamino-4-methylbenzenesulfonic Acid; Toluene-2,6-diamine-4-sulfonic Acid; 2,6-Diaminotoluene-p-sulfonic Acid
EINECS	202-650-8

Quality Control

Our 2,6-Diaminotoluene-4-Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial and fine chemical applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance 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). Keep away from strong acids and organic solvents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Light brown to gray crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 2.0%

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