Description

Diammonium 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-Tritriacontafluorooctadecyl Phosphate is a specialized fluorinated phosphate ester salt, engineered to deliver exceptional surface activity and chemical stability. This compound is critical for applications requiring durable water and oil repellency, low surface energy, and enhanced performance under demanding conditions. It is primarily utilized by formulators and manufacturers in the coatings, textile finishing, and specialty surfactant industries seeking advanced fluorochemical functionality.

Application

• Textile Finishing Agent: Imparts durable water-repellent (DWR) and stain-resistant properties to technical fabrics, outdoor apparel, and upholstery.
• Specialty Surfactant & Leveling Agent: Used in high-performance coating and paint formulations to improve wetting, leveling, and substrate adhesion, particularly on low-energy surfaces.
• Paper & Packaging Coatings: Provides grease resistance and moisture barrier properties for food packaging and specialty papers.
• Firefighting Foam Concentrates (Legacy/Industrial): Historically used as a fluorosurfactant component in certain aqueous film-forming foam (AFFF) formulations for hydrocarbon fuel fires (subject to regional regulations).
• Industrial Cleaner & Polishes: Acts as a key ingredient in formulations for automotive waxes, floor polishes, and industrial cleaners to enhance gloss and provide protective films.
• Mold Release Agents: Facilitates the release of manufactured parts from molds in plastics and composite material processing.

Basic Information

Product Name	Diammonium 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-Tritriacontafluorooctadecyl Phosphate
CAS No.	93857-48-8
Molecular Formula	C36H35F33N2O4P
Molecular Weight	~1334.59 g/mol
Synonyms	Diammonium Perfluorooctadecyl Phosphate; Diammonium 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-Heptatriacontafluorooctadecyl Phosphate; Diammonium 1H,1H,2H,2H-Perfluorooctadecyl Phosphate; FC-722 (Historical/Trade Name Variant); Fluorinated Phosphate Ester, Diammonium Salt; Perfluoroalkyl Phosphate (PAP) Salt; C18 Fluorotelomer Phosphate Diester, Diammonium Salt
EINECS	Contact for details

Quality Control

Our production of Diammonium 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-Tritriacontafluorooctadecyl Phosphate adheres to a strict quality management system. Every batch is analyzed to ensure consistent chemical composition, purity, and performance characteristics. Certificates of Analysis (COA) detailing key specifications are provided with each shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance. Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or waxy solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Fluorine Content	≥ 65.0%
Water Content (KF)	≤ 2.0%
pH (10% aqueous dispersion)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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