Description

Bis(Heptadecafluorooctyl)Phosphinic Acid CAS NO 40143-79-1 is a high-performance perfluorinated organophosphorus compound, valued for its exceptional surface activity and chemical stability derived from its long perfluoroalkyl chains. This specialty chemical serves as a critical intermediate and functional additive, enabling unique properties in demanding industrial applications. It is primarily sought by manufacturers in the fluoropolymer, electronics, and advanced coating sectors for its ability to impart oil and water repellency, low surface energy, and enhanced durability.

Application

• Fluoropolymer Processing Aid: Acts as a surfactant and stabilizer in the polymerization of PTFE and other fluoroplastics.
• Surface Modification Agent: Imparts superior hydrophobic and oleophobic properties to textiles, paper, and leather.
• Electronic Chemicals: Used in the formulation of anti-reflective coatings and as a wetting agent for high-purity photoresists.
• Firefighting Foam Concentrates (Legacy/Industrial): A key fluorosurfactant component in certain Class B firefighting foams for hydrocarbon fires.
• Specialty Lubricants & Greases: Enhances thermal and chemical stability in high-performance lubricant formulations.
• Metal Etching & Plating: Functions as a mist suppressant and wetting agent in acidic electroplating baths.
• Phosphorus-Containing Intermediate: Serves as a building block for synthesizing more complex fluorinated phosphonates and phosphates.

Basic Information

Product Name	Bis(Heptadecafluorooctyl)Phosphinic Acid
CAS No.	40143-79-1
Molecular Formula	C₁₆HF₃₄O₂P
Molecular Weight	850.08 g/mol
Synonyms	Perfluorooctylphosphinic Acid; 1H,1H,2H,2H-Perfluorooctylphosphinic Acid; Bis(1H,1H,2H,2H-Heptadecafluorooctyl)Phosphinic Acid; Bis(Perfluorooctyl)Phosphinic Acid; Phosphinic Acid, Bis(Heptadecafluorooctyl)-; FC-8 Phosphinic Acid; C8-Perfluoroalkyl Phosphinic Acid
EINECS	Contact for details

Quality Control

Our production of Bis(Heptadecafluorooctyl)Phosphinic Acid adheres to a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including NMR, HPLC, and titration to verify identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. The product is moisture-sensitive; keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Acidity (Titration)	Contact for details
Water Content (KF)	≤ 0.5%
Fluorine Content	Contact for details

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