Nonafluorobutanesulfonyl fluoride (CAS 375-75-4), also known as NBSF or NfF, is a clear, colorless, and highly reactive liquid. Developed specifically by our company to meet and exceed the performance standards of 3M's FC-4, this perfluorinated sulfonyl fluoride is a foundational intermediate in modern fluorochemical synthesis. Its C4 perfluorinated chain provides the ideal balance of high chemical stability and ultra-low surface energy while meeting modern environmental safety standards for shorter-chain fluorochemicals. It is the primary precursor for nonafluorobutanesulfonate salts and specialized surfactants used in the electronics, battery, and coating industries.

• Direct 3M FC-4 Alternative: Engineered to match the chemical profile and reactivity of 3M's legacy FC-4, ensuring seamless integration into existing production lines.

• High Chemical Reactivity: The sulfonyl fluoride group allows for efficient conversion into various sulfonamides, esters, and salts.

• Superior Purity (greater than or equal to 99.0%): Our proprietary synthesis process minimizes volatile impurities and moisture, which is critical for battery-grade applications.

• Enhanced Thermal Stability: Derivatives produced from our NBSF maintain structural integrity in extreme temperature industrial environments.

• Optimized Environmental Profile: Based on a C4 perfluorinated chain, offering a more sustainable alternative to longer-chain (C8) legacy fluorochemicals.

• Scalable Production: As the original developer, we offer stable bulk supply and consistent batch-to-batch quality.

Synthesis of High-Performance Surfactants

Used as a key intermediate for non-ionic and anionic perfluorinated surfactants that achieve ultra-low surface tension in aqueous and organic systems.

Lithium-Ion Battery Electrolyte Additive

Acts as a raw material for synthesizing perfluorobutanesulfonate salts, which serve as high-stability electrolyte additives to improve cycle life.

Industrial Protective Coatings

Functions as a building block for high-end water- and oil-repellent agents used in technical textile, paper, and leather surface treatments.

Ion Exchange Membrane Production

Utilized in the manufacturing of high-performance perfluorinated membranes for fuel cells and industrial chlor-alkali electrolysis processes.

Electronics and Semiconductor Polymers

Serves as a precursor for fluorinated photoresist components and specialty polymers used in advanced semiconductor lithography.

Standard industrial packaging options for Nonafluorobutanesulfonyl fluoride include:

• 1kg or 5kg specialized fluorinated HDPE bottles for laboratory and pilot-scale use.

• 25kg or 50kg UN-approved fluorinated plastic drums for industrial production.

• 250kg bulk stainless steel drums for large-scale chemical manufacturing.

• All packaging is hermetically sealed to prevent moisture absorption and ensure the longevity of the reactive sulfonyl fluoride group.

Nonafluorobutanesulfonyl fluoride is a reactive and moisture-sensitive liquid. It must be stored in a cool, dry, and well-ventilated warehouse. Containers must be kept tightly sealed and stored under a nitrogen blanket to prevent hydrolysis. Store away from strong bases, alcohols, and moisture. Given its high stability, it has a shelf life of 24 months if stored correctly in its original, unopened packaging.

NBSF, Perfluorobutanesulfonyl fluoride, NfF, 1-Nonafluorobutanesulfonyl fluoride, Benchmark 3M FC-4.

1. Potassium Perfluorobutanesulfonate (PFBSK) – CAS 29420-49-3

2. Perfluorobutanesulfonic Acid (PFBS) – CAS 375-73-5

3. Trifluoromethanesulfonyl fluoride – CAS 335-05-7

4. Perfluorooctanesulfonyl fluoride (POSF) – CAS 307-35-7

5. Nonafluorobutane-1-sulfonamide – CAS 30334-69-1

6. Lithium Nonafluorobutanesulfonate – CAS 131651-65-5

7. Perfluorohexylsulfonyl fluoride – CAS 423-50-7

8. 3M FC-4 (Comparable Product)

9. Heptafluorobutyryl chloride – CAS 375-16-6

10. Perfluorinated Ion Exchange Resin

High-Performance Surfactant Use

• Q: How does this NBSF compare to 3M FC-4 in surfactant synthesis?

• A: Our NBSF is chemically identical in its perfluorinated structure and reactivity, allowing it to produce surfactants with the same ultra-low surface tension properties as FC-4 based products.

Battery Electrolyte Additive Use

• Q: Is the purity high enough for lithium-ion battery applications?

• A: Yes. We strictly control moisture and metal ions (Fe < 2ppm), ensuring that the resulting sulfonate salts meet the high-stability requirements of modern electrolyte systems.

Protective Coating Use

• Q: Will derivatives of this product cause yellowing in textile coatings?

• A: No. Due to the high assay and low impurity profile of our NBSF, the resulting coating agents maintain excellent color stability and do not degrade under standard environmental conditions.

Ion Exchange Membrane Use

• Q: How does this product facilitate membrane production?

• A: Its high reactivity allows for the precise grafting of sulfonic groups onto polymer backbones, which is essential for creating durable, high-conductivity ion exchange membranes.

Electronic Polymer Use

• Q: Is this product suitable for use in semiconductor photoresists?

• A: Yes. The short-chain C4 structure provides the necessary acidity and solubility characteristics required for high-resolution lithography while adhering to environmental regulations.