Description

Hexafluorophosphoric Acid is a powerful inorganic acid and a key source of the hexafluorophosphate anion (PF6-). Its unique combination of high acidity and a weakly coordinating anion makes it an essential reagent in advanced chemical synthesis and materials science. This compound is critical for researchers and manufacturers in the electronics, battery technology, and specialty chemical sectors seeking to develop high-performance materials and catalysts.

Application

• Electrolyte Salt Precursor: A primary starting material for synthesizing lithium hexafluorophosphate (LiPF6), the dominant electrolyte salt in lithium-ion batteries.
• Catalyst & Reagent: Used as a strong Brønsted acid catalyst in organic synthesis, particularly for alkylation, acylation, and polymerization reactions.
• Surface Treatment & Etching: Employed in the electronics industry for metal surface treatment and as an etchant for specific semiconductor materials.
• Ionic Liquid Synthesis: Serves as a key component in the production of hexafluorophosphate-based ionic liquids, valued for their low volatility and high thermal stability.
• Electroplating Additive: Functions as an additive in electroplating baths to improve deposit quality and throwing power.
• Analytical Chemistry: Utilized as a reagent in specific analytical techniques and for the preparation of analytical standards.

Basic Information

Product Name	Hexafluorophosphoric Acid
CAS No.	16940-81-1
Molecular Formula	HPF6
Molecular Weight	145.97 g/mol
Synonyms	Hydrogen hexafluorophosphate; Hexafluorophosphoric acid solution; Phosphorofluoridic acid, hexafluoro-; HPF6; PF6H
EINECS	241-006-5

Quality Control

Our Hexafluorophosphoric Acid is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay by titration and impurity profiling, to ensure it meets exacting purity standards for high-end applications. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability, consistency, and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area, away from heat sources and incompatible materials such as strong bases and reactive metals. Due to its nature as a strong acid/organic solvent and highly volatile compound, containers must be kept tightly sealed and upright to prevent moisture ingress and fume release. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPF6)	≥ 65.0 % (in aqueous solution)
Fluoride (F-)	≤ 0.5 %
Phosphate (PO43-)	≤ 0.1 %
Sulfate (SO42-)	≤ 0.01 %
Chloride (Cl-)	≤ 0.005 %
Heavy Metals (as Pb)	≤ 5 ppm

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