Ammonium hexafluorophosphate Property

Melting point:

58 °C (lit.)

Density 

2.18 g/mL at 25 °C (lit.)

storage temp. 

Inert atmosphere,Room Temperature

solubility 

H₂O: 50 mg/mL, clear, colorless

form 

Crystalline Powder or Needles

Specific Gravity

2.180

color 

White to beige

Water Solubility 

74.8 g/100 mL (20 ºC)

Sensitive 

Hygroscopic

Merck 

14,526

Stability:

Stable. Incompatible with strong acids. Hygroscopic. Combustion may generate hydrogen fluoride, phosphorus oxides, phosphine or ammonia.

InChIKey

NIZXKAYXSNUDOU-UHFFFAOYSA-O

CAS DataBase Reference

16941-11-0(CAS DataBase Reference)

EPA Substance Registry System

Phosphate(1-), hexafluoro-, ammonium (16941-11-0)

Safety

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45

RIDADR 

UN 3260 8/PG 2

WGK Germany 

3

F 

3

Hazard Note 

Corrosive/Hygroscopic

TSCA 

T

HazardClass 

8

PackingGroup 

III

HS Code 

28269090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Ammonium hexafluorophosphate Chemical Properties,Usage,Production

Description

Ammonium hexafluorophophate can be used to for the synthesis of non-aqueous polymer gel electrolytes based on polyethylene oxide (PEO), which show high conductivity above 10-2 S/cm at 25°C.¹ It can be used to prepare other hexafluorophosphate.² It is also used for the synthesis of ruthenium and palladium complexes.³

Reference

• J. P. Sharma, S. S. Sekhon, Highly conductive non aqueous polymer gel electrolytes containing ammonium hexafluorophosphate (NH4PF6), Journal of Materials Science, 2006, vol. 41, pp. 3617-3622
• C. Hiort, P. Lincoln, B. Norden, DAN binding of .DELTA.and .LAMBDA.-[Ru(phen)2DPPZ]2+, Journal of the American Chemical Society, 1993, vol. 115, pp. 3448-3454
• D. Schmollinger, J. Kraft, C. Ewald, T. Ziegler, Synthesis of ruthenium and palladium complexes from glycosylated 2,2′-bipyridine and terpyridine ligands, 2017, vol. 58, pp. 3643-3645

Chemical Properties

off-white powder

Uses

Ammonium hexafluorophosphate is used as a preservative. It is used as a starting material in the preparation of other hexafluorophosphates. Further, it is used in synthesis of organometalic compounds, especially rhodicinium hexafluorophosphate, which has inert and non-coordinating counter ion.

Uses

Ammonium hexafluorophosphate is used to synthesize polyethylene oxide based highly conductive non aqueous polymer gel electrolytes exhibiting high conductivity (>10-2S/cm at 25^oC)

Uses

Ammonium hexafluorophosphate (NH₄PF₆) can be used as a precursor for the preparation of:

• Metal complexes, particularly iridium and rhodium complexes.???????
• Flame retardant cellulose-based materials.???????
• Cyclic amidinium and iminium ammonium hexafluorophosphate salts.????????
• The polymer-supported iridium isomerization catalyst for the selective trans isomerization of aryl allylic derivatives.

General Description

Ammonium hexafluorophosphate decomposes on heating before melting. Solubility of ammonium hexafluorophosphate in H₂O at 20^oC is 74.8% w/v. Additionally, it is very soluble in Me₂CO, MeOH, EtOH and MeOAc, and is decomposed by boiling mineral acids.

Purification Methods

It crystallises from H2O in square plates and decomposes on heating before melting. Its solublility in H2O at 20o is 74.8% w/v, and it is very soluble in Me2CO, MeOH, EtOH and MeOAc but is decomposed by boiling mineral acids. [Lange & Müller Chem Ber 63 1063 1930, Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 195 1963.]