Description

2-Formyl-1,4-Benzenedisulfonic Acid is a key aromatic sulfonic acid derivative featuring both formyl and sulfonic acid functional groups. This unique bifunctional structure makes it a versatile and valuable chemical intermediate for synthesizing complex molecules, particularly in the production of dyes, optical brighteners, and specialty polymers. It is essential for manufacturers and R&D laboratories in the fine chemical, pharmaceutical, and agrochemical sectors who require high-purity, reactive building blocks for advanced synthesis.

Application

• Dye and Pigment Intermediate: A critical precursor in the synthesis of sulfonated azo dyes and high-performance pigments, contributing to color fastness and solubility.
• Optical Brightener (OBA) Synthesis: Serves as a key building block for manufacturing stilbene-based optical brighteners used in paper, detergents, and textiles.
• Pharmaceutical Intermediate: Utilized in the research and development of active pharmaceutical ingredients (APIs), especially those requiring sulfonic acid groups for enhanced bioavailability.
• Agrochemical Synthesis: Employed in creating sulfonated herbicides, fungicides, and plant growth regulators.
• Polymer and Resin Modification: Used to introduce sulfonic acid groups into polymers, improving properties like hydrophilicity, ion-exchange capacity, and dyeability.
• Crosslinking Agent: Functions as a reactive site in the production of crosslinked resins and advanced materials.
• Catalyst and Ligand Preparation: Acts as a precursor for synthesizing specialized catalysts and ligands used in organic synthesis.
• Research & Development: A valuable reagent for academic and industrial research in organic chemistry and material science.

Basic Information

Product Name	2-Formyl-1,4-Benzenedisulfonic Acid
CAS No.	730912-46-6
Molecular Formula	C7H6O7S2
Molecular Weight	266.25 g/mol
Synonyms	1,4-Benzenedisulfonic acid, 2-formyl-; 2-Formylbenzene-1,4-disulfonic Acid; 4-Formylbenzene-1,3-disulfonic Acid (isomer); 5-Formyl-1,3-benzenedisulfonic Acid; Terephthalaldehydic Acid Disulfonic Acid; Formylbenzenedisulfonic Acid; Benzaldehyde-2,5-disulfonic Acid; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Every batch of 2-Formyl-1,4-Benzenedisulfonic Acid is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive Certificates of Analysis (COA) for each shipment, detailing purity, identity, and impurity profiles. Our products are suitable for demanding applications in pharmaceutical and fine chemical synthesis.

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 compound is hygroscopic (moisture-sensitive); therefore, containers must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in water, strong acid/organic solvent

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