Description

Perfluoro-3,6,9-Trioxaundecane-1,11-Dioic Acid is a high-purity, fluorinated dicarboxylic acid derivative, valued for its unique combination of strong acidity and exceptional chemical and thermal stability imparted by its perfluorinated polyether backbone. This compound is a critical intermediate and functional additive in advanced material synthesis, where its properties enable enhanced performance. It is primarily sought by manufacturers in the specialty polymer, surface treatment, and pharmaceutical industries for developing high-value, fluorinated products.

Application

• Fluoropolymer Modification: Serves as a key monomer or chain-transfer agent for introducing carboxylic acid functionality into fluorinated elastomers and thermoplastics, improving adhesion and compatibility.
• Surface Active Agents: Used to synthesize highly stable, fluorinated surfactants and leveling agents for coatings, electronics, and fire-fighting foams.
• Pharmaceutical & Agrochemical Intermediates: Acts as a building block for creating novel, metabolically stable active ingredients and prodrugs.
• Lithium-Ion Battery Electrolytes: Investigated as an additive or precursor for fluorinated electrolyte components to enhance thermal stability and cycle life.
• Specialty Catalysts & Ligands: Employed in the preparation of metal-organic frameworks (MOFs) and catalysts for demanding chemical processes.
• Advanced Material Cross-linking: Functions as a cross-linker or curing agent for high-performance resins requiring chemical resistance.

Basic Information

Product Name	Perfluoro-3,6,9-Trioxaundecane-1,11-Dioic Acid
CAS No.	55621-18-6
Molecular Formula	C11H2F18O8
Molecular Weight	568.10 g/mol
Synonyms	1,11-Perfluoro-3,6,9-trioxaundecanedioic Acid; 3,6,9-Trioxaundecanedioic Acid, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-Tetracosafluoro-; Perfluoropolyether Dicarboxylic Acid (PFPE-DA); FC-26 Dicarboxylic Acid; HFPO-DA Dimer Acid (related form); Perfluoro(2,5,8-trimethyl-3,6,9-trioxadodecanedioic acid) (isomer); Fluorolink® C (trade name analog).
EINECS	Contact for details

Quality Control

Our production of Perfluoro-3,6,9-Trioxaundecane-1,11-Dioic Acid adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including NMR, FT-IR, and HPLC, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment. We can support development projects requiring compliance with ICH guidelines or other specific regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and incompatible with strong bases and strong oxidizing agents. Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent moisture uptake and potential degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Fluorine Content	≥ 60.0%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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