Description

3,6-Dihydroxyphthalic Acid is a versatile aromatic dicarboxylic acid derivative characterized by two hydroxyl groups on its benzene ring. This unique structure makes it a valuable intermediate in the synthesis of complex organic molecules, particularly in the production of dyes, pigments, and advanced polymers. It is essential for manufacturers and R&D laboratories in the fine chemical, pharmaceutical, and material science industries seeking to develop high-performance compounds.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules.
• Dye and Pigment Synthesis: Used in the production of high-value colorants, including quinacridone pigments and other organic dyes.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers, such as polyimides and epoxy resins, for enhanced thermal and mechanical properties.
• Chelating Agent: Functions as a ligand in metal complexation for catalytic applications and in analytical chemistry.
• Research & Development: A crucial reagent in academic and industrial R&D for exploring new synthetic pathways and material properties.
• Fine Chemical Synthesis: Employed in the multi-step synthesis of complex organic compounds for various industrial applications.

Basic Information

Product Name	3,6-Dihydroxyphthalic Acid
CAS No.	3786-46-7
Molecular Formula	C8H6O6
Molecular Weight	198.13 g/mol
Synonyms	3,6-Dihydroxybenzene-1,2-dicarboxylic Acid; 3,6-Dihydroxy-o-phthalic Acid; 3,6-Dihydroxy-1,2-benzenedicarboxylic Acid; 3,6-Dihydroxyphthalic Anhydride (dehydration product); 3,6-DHPA; 3,6-Dihydroxybenzene-1,2-dioic Acid
EINECS	223-259-6

Quality Control

Our 3,6-Dihydroxyphthalic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets high-grade specifications suitable for demanding applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This compound is easily oxidized; for long-term storage, consider an inert atmosphere. Keep away from incompatible materials such as strong oxidizing agents, strong bases, and reducing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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