Description

3,4-Dichloro-2-Hydroxybenzenefulfonic Acid is a specialized halogenated phenolic sulfonic acid derivative. This compound serves as a versatile key intermediate in the synthesis of more complex molecules, particularly in fine chemical and pharmaceutical manufacturing. It is primarily sought by R&D chemists and production specialists in the agrochemical, pharmaceutical, and dye industries for constructing active ingredients and functional colorants.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a halogenated phenolic sulfonate moiety.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where its dichloro and sulfonic acid groups contribute to biological activity.
• Dye and Pigment Manufacturing: Functions as a precursor for the development of specialized azo dyes and pigments, providing chromophore and auxochrome properties.
• Chemical Research & Development: Employed as a versatile synthon in organic chemistry for creating novel sulfonated and halogenated compounds.
• Polymer Modification: Can be used to introduce sulfonic acid groups into polymer chains, potentially altering solubility or ionic characteristics.
• Ligand for Metal Complexation: The hydroxyl and sulfonic acid groups make it a candidate for chelating agents or catalysts in certain metal-mediated reactions.

Basic Information

Product Name	3,4-Dichloro-2-Hydroxybenzenefulfonic Acid
CAS No.	89281-39-0
Molecular Formula	C6H4Cl2O4S
Molecular Weight	243.07 g/mol
Synonyms	3,4-Dichloro-2-hydroxybenzenesulfonic acid; 2-Hydroxy-3,4-dichlorobenzenesulfonic acid; 3,4-Dichloro-2-hydroxybenzenesulphonic acid; 3,4-Dichlorosalicylic acid sulfonic acid; 2,3-Dichloro-6-hydroxybenzenesulfonic acid (alternate numbering); 6-Hydroxy-2,3-dichlorobenzenesulfonic acid; Benzenesulfonic acid, 3,4-dichloro-2-hydroxy-
EINECS	Contact for details

Quality Control

Our 3,4-Dichloro-2-Hydroxybenzenefulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing including HPLC for purity and identity confirmation to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request, providing full traceability and compliance assurance for your regulatory 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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