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Ammonium bifluoride

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Identification
Molecular formula
NH4HF2
CAS number
1341-49-7
IUPAC name
ammonium;fluoride;hydrofluoride
State
State

At room temperature, ammonium bifluoride is a solid. It occurs in the form of white crystals or powder.

Melting point (Celsius)
125.00
Melting point (Kelvin)
398.15
Boiling point (Celsius)
240.00
Boiling point (Kelvin)
513.15
General information
Molecular weight
57.04g/mol
Molar mass
57.0430g/mol
Density
1.5000g/cm3
Appearence

Ammonium bifluoride appears as a white, crystalline solid or powder. It is hygroscopic, meaning it can absorb moisture from the air, which can lead to clumping.

Comment on solubility

Solubility of Ammonium Fluoride (NH4F)

Ammonium fluoride is known for its interesting solubility characteristics. Here are some key points about its solubility:

  • Highly Soluble in Water: Ammonium fluoride dissolves readily in water, making it a *highly soluble* compound.
  • Temperature Dependency: Its solubility tends to increase with rising temperatures, which is common for many salts.
  • Le Chatelier's Principle: According to this principle, solubility can be influenced by factors such as concentration and pressure.
  • Formation of Ions: Upon dissolving, it dissociates into ammonium ions (NH4+) and fluoride ions (F-), which can affect the pH of the solution.

In summary, the solubility profile of ammonium fluoride demonstrates its behavior as a strong electrolyte, readily dissociating in water and contributing to its effectiveness in various applications.

Interesting facts

Interesting Facts about Ammonium Fluoride (NH4F)

Ammonium fluoride is a fascinating compound that has garnered attention in various fields due to its unique properties and applications. Here are some interesting insights into this chemical:

  • Versatile Use: Ammonium fluoride is primarily utilized in the manufacture of aluminum etching, glass cleaning, and the production of semiconductor materials. Its ability to etch surfaces makes it invaluable in electronics.
  • Inorganic Hybrid: As a combination of ammonium and fluoride ions, this compound showcases the intriguing interplay between ionic structures, highlighting the diverse behaviors of non-metal and metal interactions.
  • Safety Considerations: Though useful, ammonium fluoride can be hazardous. It is important to handle it with care as it may cause skin irritation and respiratory issues upon exposure. Safety measures such as gloves and masks are recommended when working with this compound.
  • Reactants of Interest: When dissolved in water, ammonium fluoride can release hydrofluoric acid, which adds another layer of reactivity and caution when using this compound. This reactivity allows for its application in synthetic organic chemistry for fluorination reactions.

Environmental Impact and Research

Recent studies have focused on the environmental implications of fluoride compounds, including ammonium fluoride. Researchers are assessing:

  • Fluoride Contamination: Understanding how fluoride compounds infiltrate water supplies and their consequent effects on human health and ecosystems.
  • Alternative Methods: Exploring safer alternatives for applications traditionally relying on ammonium fluoride to minimize environmental impact.

In conclusion, ammonium fluoride is more than just a chemical compound; it reflects critical issues in manufacturing, safety, and environmental science. As our understanding of such compounds evolves, so does their role in both industry and research.

Synonyms
AMMONIUM BIFLUORIDE
1341-49-7
Ammonium hydrogen difluoride
Ammonium hydrofluoride
Ammonium hydrogendifluoride
Ammonium fluoride ((NH4)(HF2))
HSDB 480
Fluorure acide d'ammonium [French]
Fluorure acide d'ammonium
EINECS 215-676-4
C2M215358O
AMMONIUM BIFLUORIDE [MI]
DTXSID9029645
UNII-C2M215358O
Ammonium hydrogendifluoride, solid
AMMONIUM BIFLUORIDE [HSDB]
AMMONIUM BIFLUORIDE [WHO-DD]
Ammonium fluoride comp. with hydrogen fluoride (1:1)
EC 215-676-4
Fluorure acide d'ammonium (French)
AMMONIUM HYDROGEN FLUORIDE, (SOLID)
AMMONIUM HYDROGEN FLUORIDE, [SOLID]
UN2817 (Solution)
UN1727 (Solid)
DTXCID309645
AMMONIUM BIFLUORIDE, SOLID
AMMONIUM BIFLUORIDE, SOLUTION
AMMONIUM HYDROGEN FLUORIDE, SOLID
AMMONIUM HYDROGEN FLUORIDE (NH4HF2)
AMMONIUM HYDROGEN FLUORIDE ((NH4)(HF2))
Ammonium fluoride comp with hydrogen fluoride (1:1)
215-676-4
ammonium hydrogen fluoride
Ammonium difluoride
azanium;fluoride;hydrofluoride
ammonium fluoride hydrofluoride
Acid ammonium fluoride
Ammonium acid fluoride
Ammonium hydrogen bifluoride
Flammon
MFCD00012018
UN1727
UN2817
KVBCYCWRDBDGBG-UHFFFAOYSA-N
NS00081171
Q473546
Ammonium hydrogendifluoride, solid [UN1727] [Corrosive]