Ammonium hexafluorophosphate, CAS No. 16941-11-0

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16941-11-0

Catalog No. EBD21854

CAS 16941-11-0

Name Ammonium hexafluorophosphate

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Basic Information

Synonyms: AI3-16097 AI3-52624 Ammoniumhexafluorophosphate(1-) Ammoniumphosphorusfluoride NSC403554 Phosphate(1-),hexafluoro-,ammonium Phosphate(1-),hexafluoro-,ammonium(1:1) Diammoniumhexachloroiridate Iridium(IV)-ammoniumchloride Ammoniumhexafluorophosphate

Molecular Formula: F6H4NP

Molecular Weight: 163.0

MDL Number: MFCD00064642

Categories: Materials Chemistry > Battery and Energy Storage Materials > Lithium and Sodium Salt Precursors Synthetic Chemistry > Basic Synthetic Reagents > Inorganic Compounds and Metal Salts

Product Description:

Ammonium hexafluorophosphate is an inorganic salt with the chemical formula NH₄PF₆. It appears as a white crystalline solid and is highly soluble in water and polar organic solvents. It is a source of the hexafluorophosphate anion (PF₆⁻), which is known for its low nucleophilicity and high electrochemical stability. Its primary industrial application is as a key precursor in the synthesis of lithium hexafluorophosphate (LiPF₆), which is the dominant electrolyte salt in commercial lithium-ion batteries. The ammonium salt serves as an intermediate in the production process. Additionally, it is used as a supporting electrolyte in electrochemical studies and as a reagent for the preparation of other hexafluorophosphate salts used in catalysis and materials science. Handling requires caution as it is hygroscopic and can decompose upon heating or in contact with strong acids, potentially releasing toxic and corrosive hydrogen fluoride (HF) gas.

Physical Properties

Melting Point: 58 °C(lit.)

Density: 2.18 g/mL at 25 °C(lit.)

Solubility: acetic acid: slightly soluble(lit.)

Safety Information

Packing Level: II

Hazard Category: 8

Transport Codes: 3260

Analytical Data

Appearance: white crystalline powder