Description

3,4-Dichloroorthanilic Acid (So3H=1) is a specialized sulfonated aniline derivative, serving as a critical intermediate in advanced organic synthesis. Its value lies in providing a functionalized aromatic core with both halogen and sulfonic acid groups, enabling precise chemical modifications. This compound is essential for manufacturers in the agrochemical and pharmaceutical sectors, particularly for synthesizing dyes, pigments, and active pharmaceutical ingredients (APIs) requiring specific solubility and reactivity profiles.

Application

• Agrochemical Intermediate: Key building block for synthesizing modern herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used in the production of sulfa drugs and other active pharmaceutical ingredients (APIs) requiring a sulfonated aniline moiety.
• Dye and Pigment Manufacturing: Serves as a precursor for azo dyes and other colorants, where the sulfonic acid group enhances water solubility.
• Chemical Research & Development: A valuable reagent for organic chemists developing new compounds in medicinal and materials chemistry.
• Polymer Modification: Can be incorporated into polymers to introduce ionic character or specific binding sites.

Basic Information

Product Name	3,4-Dichloroorthanilic Acid (So3H=1)
CAS No.	56978-51-9
Molecular Formula	C6H5Cl2NO3S
Molecular Weight	242.08 g/mol
Synonyms	2-Amino-4,5-dichlorobenzenesulfonic Acid; 4,5-Dichloro-2-aminobenzenesulfonic Acid; 3,4-Dichloroaniline-6-sulfonic Acid; 4,5-Dichloro-2-sulfoaniline; Orthanilic Acid, 3,4-dichloro-; 56978-51-9; Benzenesulfonic acid, 2-amino-4,5-dichloro-
EINECS	Contact for details

Quality Control

Our 3,4-Dichloroorthanilic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for use in sensitive synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

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 tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

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

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