Ammonium Bifluoride - Materials / Alfa Chemistry

NAVIGATION

Ammonium Bifluoride

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Catalog Number

ACMA00014296

Product Name

Ammonium Bifluoride

Category

Glass Additives

Description

DryPowder; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals

IUPAC Name

azanium;fluoride;hydrofluoride

Molecular Weight

57.044g/mol

Molecular Formula

F2H5N

Canonical SMILES

[NH4+].F.[F-]

InChI

InChI=1S/2FH.H3N/h2*1H;1H3

InChI Key

KVBCYCWRDBDGBG-UHFFFAOYSA-N

Boiling Point

240 °C (decomposes)

Melting Point

125.6 °C

Density

1.50 g/cu cm

Solubility

Solubility in 90% ethanol = 1.73X10+5 mg/L;In water, 6.02X10+5 mg/L at 20 °C

Application

Ammonium bifluoride, or NH4HF2, serves multiple purposes across various industries due to its versatile chemical properties. It is widely utilized in the manufacturing of magnesium and its alloys, as well as in the brightening of aluminum surfaces. The compound is an effective agent for purifying and cleansing components of beer-dispensing systems and sterilizing dairy and other food equipment. In the glass and porcelain sectors, it finds application as a critical ingredient, and it acts as a mordant for treating aluminum. In textile processing, ammonium bifluoride is employed as a "sour" during the laundering of cloth. Additionally, it is used in laboratory settings for producing hydrofluoric acid (HF). An affordable option compared to other fluoride sources, ammonium bifluoride also shows promising results in dental health applications. Studies demonstrate it as a potent inhibitor of caries-like lesion formation by enhancing fluoride uptake in tooth enamel. Furthermore, it is effective in the fluorination of hydroxyapatite powder via various methods, offering cost and solubility benefits over alternate fluoride sources.

Color/Form

Rhombic or tetragonal crystals;Orthorhombic crystals;White crystals

Complexity

Corrosivity

Will etch glass;In presence of moisture will corrode glass, cement, and most metals.

Covalently-Bonded Unit Count

EC Number

215-676-4

Exact Mass

57.039005g/mol

Formal Charge

Heat of Vaporization

65.3 kJ/mol

Heavy Atom Count

MeSH Entry Terms

ammonium bifluoride;ammonium fluoride;ammonium fluoride (NH4-HF2);ammonium fluoride dihydrate;ammonium fluoride monohydrate

Monoisotopic Mass

57.039005g/mol

Odor

Odorless

Other Experimental

Deliquescent;Standard heat of formation = -798.3 kJ/mol; Heat of fusion = 19.1 kJ/mol; Heat of solution = 20.3 kJ/mol; Heat of dissociation = 141.4 kJ/mol; Heat capacity = 106.7 J/mol-K at 25 °C; Hygroscopic if ambient humidity over 50%; no tendency to form hydrates

Refractive Index

Index of refraction = 1.390

Rotatable Bond Count

UNII

C2M215358O

UN Number

1727;1727

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