Description

3,6-Difluorophthalic Acid is a high-purity fluorinated aromatic dicarboxylic acid building block essential for advanced organic synthesis. This compound matters for its role as a key precursor in the development of high-performance materials and active pharmaceutical ingredients (APIs), where the introduction of fluorine atoms is critical for modulating electronic properties and metabolic stability. It is primarily needed by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty polymer sectors seeking to innovate with fluorinated compounds.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing novel fluorinated active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the production of advanced herbicides, pesticides, and fungicides where fluorination enhances biological activity and environmental stability.
• Liquid Crystal & OLED Materials: Serves as a key monomer for creating fluorinated polyimides and other polymers used in electronic displays and optoelectronic devices.
• Polymer Modification: Incorporated into polymer backbones to improve thermal stability, chemical resistance, and dielectric properties of engineering plastics.
• Complex Ligand Synthesis: Employed in the preparation of fluorinated ligands for catalysis and metal-organic frameworks (MOFs).
• Dye & Pigment Intermediate: Used in the synthesis of specialized fluorinated dyes and pigments with unique color fastness and properties.

Basic Information

Product Name	3,6-Difluorophthalic Acid
CAS No.	651-97-8
Molecular Formula	C8H4F2O4
Molecular Weight	202.11 g/mol
Synonyms	3,6-Difluorobenzene-1,2-dicarboxylic Acid; 3,6-Difluorophthalic Acid; 1,2-Benzenedicarboxylic acid, 3,6-difluoro-; Difluorophthalic Acid; 3,6-DFPA; NSC 403119
EINECS	211-477-7

Quality Control

Our 3,6-Difluorophthalic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and titration methods, to ensure high chemical purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment upon request, supporting your quality assurance and regulatory compliance needs.

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). Keep away from strong bases, oxidizing agents, and sources of ignition. Due to its nature as a strong acid/organic solvent, handle with appropriate personal protective equipment in a fume hood.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
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.