Description

2-Aminotoluene-3,5-Disulphonic Acid is a key aromatic sulfonic acid derivative, serving as a critical intermediate in the synthesis of high-value dyes and pigments. Its disulphonic acid structure provides excellent water solubility and reactivity, making it indispensable for creating vibrant and stable colorants. This compound is primarily sought by manufacturers in the dye and pigment industry, as well as researchers developing specialty chemicals and optical materials.

Application

• Primary Intermediate for Dyes & Pigments: A crucial building block in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles, leather, and paper.
• Optical Brightener Production: Used in the manufacture of fluorescent whitening agents (FWAs) for detergents, papers, and plastics.
• Specialty Chemical Synthesis: Serves as a precursor for liquid crystal materials, agrochemicals, and other fine chemicals requiring a sulfonated aromatic backbone.
• Research & Development: Employed in academic and industrial R&D for exploring new chromophores and functional materials.

Basic Information

Item	Detail
Product Name	2-Aminotoluene-3,5-Disulphonic Acid
CAS No.	68189-38-8
Molecular Formula	C7H9NO6S2
Molecular Weight	267.28 g/mol
Synonyms	3,5-Disulfo-2-aminotoluene; 2-Amino-3,5-disulfotoluene; 2-Methyl-3,5-benzenedisulfonic acid, 6-amino-; 6-Amino-2-methyl-1,3-benzenedisulfonic acid; Toluene-3,5-disulfonic acid, 2-amino-; 2-Amino-1-methyl-3,5-benzenedisulfonic acid; 2-Methyl-3,5-disulfanilic acid
EINECS	Contact for details

Quality Control

Our 2-Aminotoluene-3,5-Disulphonic Acid is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, identity, and performance. A detailed Certificate of Analysis (COA) documenting parameters such as assay, impurity profile, and physical characteristics is provided with each shipment to guarantee compliance with your specifications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%

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