Description

11H-Perfluoroundecanoic Acid is a high-purity, long-chain perfluorinated carboxylic acid (PFCA) with a terminal carboxylic acid group, serving as a critical building block and performance additive in advanced material science. Its unique fluorocarbon chain imparts exceptional chemical resistance, thermal stability, and surface-modifying properties, making it invaluable for creating durable, high-performance products. This compound is essential for R&D and manufacturing in sectors such as specialty polymers, advanced coatings, and surface treatment technologies.

Application

• As a key monomer or modifier in the synthesis of fluoropolymers and high-performance resins.
• As a surface treatment agent to impart oleophobic and hydrophobic properties to textiles, paper, and membranes.
• As a critical raw material for manufacturing fluorosurfactants and specialty emulsifiers.
• In the formulation of advanced coatings and films requiring chemical and stain resistance.
• As a standard or intermediate in analytical research and environmental testing for per- and polyfluoroalkyl substances (PFAS).
• For use in lithography and electronic chemicals where precise surface energy control is required.

Basic Information

Product Name	11H-Perfluoroundecanoic Acid
CAS No.	1765-48-6
Molecular Formula	C11HF21O2
Molecular Weight	564.08 g/mol
Synonyms	Perfluoroundecanoic Acid; Undecafluoroundecanoic Acid; H-Perfluoroundecanoic Acid; 11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-Heptadecafluoro-11-hydrooctadecanoic Acid; 1H,1H,2H,2H-Perfluoroundecanoic Acid; PFUnDA; FC-10; FC-11 Acid
EINECS	217-179-8

Quality Control

Our 11H-Perfluoroundecanoic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and titration methods, to ensure identity, purity, and consistency. We provide full traceability and detailed Certificates of Analysis (COA) with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, appropriate secondary containment is recommended. Long-term storage under an inert atmosphere (e.g., nitrogen) is advised to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	95 - 105 °C
Water Content (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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