Description

Nonafluorobutanesulfonic Acid Hydrate is a highly fluorinated sulfonic acid derivative, valued for its exceptional acidity and chemical stability. This compound serves as a powerful superacid catalyst and a key precursor for synthesizing perfluorinated sulfonate salts. It is essential for industries requiring advanced fluorochemical intermediates, including pharmaceuticals, agrochemicals, and specialty polymers. The hydrate form offers improved handling characteristics for precise formulation work.

Application

• Catalyst in Organic Synthesis: Acts as a superacid catalyst for alkylation, acylation, and other acid-catalyzed reactions, particularly where moisture sensitivity is a concern.
• Electrolyte Additive: Used in lithium-ion battery electrolytes to enhance conductivity and improve thermal stability at high voltages.
• Chemical Intermediate: Serves as a crucial precursor for the synthesis of perfluorobutanesulfonate (PFBS) salts, which are used in surface treatments and as emulsifiers.
• Etching & Surface Modification: Employed in the microelectronics industry for plasma etching processes and surface functionalization of materials.
• Pharmaceutical & Agrochemical Intermediates: Utilized in the synthesis of fluorinated active pharmaceutical ingredients (APIs) and advanced crop protection agents.
• Polymerization Aid: Functions as an initiator or catalyst in the production of fluoropolymers and other specialty polymers.

Basic Information

Product Name	Nonafluorobutanesulfonic Acid Hydrate
CAS No.	59933-66-3
Molecular Formula	C₄HF₉O₃S • xH₂O
Molecular Weight	300.10 (Anhydrous basis)
Synonyms	Perfluorobutanesulfonic Acid Hydrate; PFBS Acid Hydrate; 1,1,2,2,3,3,4,4,4-Nonafluoro-1-butanesulfonic Acid Hydrate; Nonaflic Acid Hydrate; Heptadecafluorooctanesulfonic Acid (historical synonym check); FBSA Hydrate; C4 Perfluorosulfonic Acid; 4:2 Fluorotelomer Sulfonic Acid
EINECS	Contact for details

Quality Control

Our Nonafluorobutanesulfonic Acid Hydrate is manufactured under strict quality management systems. Each batch is analyzed to ensure high purity and consistency, with specifications tailored to meet the demands of catalytic and synthetic applications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and water content is provided with every shipment to ensure full traceability and compliance with your internal quality standards.

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 should be handled in a dry atmosphere to prevent hydrolysis. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or crystalline mass
Identification (IR)	Conforms to structure
Assay (Acidimetric Titration)	≥ 95.0% (on anhydrous basis)
Water Content (KF)	Specified per grade
Fluoride Ion (F⁻)	< 0.5%
Related Impurities (HPLC)	< 2.0% total

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