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Fluoride

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Identification
Molecular formula
F-
CAS number
16984-48-8
IUPAC name
fluoride
State
State

In its ionic form, fluoride is a gas at room temperature, though it is commonly encountered as part of solid or liquid compounds.

Melting point (Celsius)
-219.60
Melting point (Kelvin)
53.55
Boiling point (Celsius)
-188.10
Boiling point (Kelvin)
85.05
General information
Molecular weight
19.00g/mol
Molar mass
18.9980g/mol
Density
1.0000g/cm3
Appearence

Fluoride ions are not visible to the naked eye in their ionic form. However, when they are part of a compound, the appearance depends on the specific compound in which they are found. For example, sodium fluoride (NaF) is a white, crystalline solid. Similarly, calcium fluoride is a white, crystalline solid.

Comment on solubility

Solubility of Fluoride Compounds

Fluoride compounds exhibit a diverse range of solubility profiles depending on their specific chemical structure and the presence of other ions in solution. Here are some important points to consider:

  • General Solubility: Many fluoride salts, such as sodium fluoride (NaF) and potassium fluoride (KF), are *moderately soluble* in water, making them useful in various applications, including dental care and water fluoridation.
  • Insoluble Fluorides: Some metal fluorides, like calcium fluoride (CaF2) and barium fluoride (BaF2), are known to be insoluble or have very low solubility in water. This low solubility can be advantageous in certain applications, such as in the manufacturing of optical materials.
  • Solubility and pH: The solubility of fluoride compounds can also be influenced by the *pH of the solution*. For instance, in acidic conditions, some fluoride ions can form complexes that increase solubility.
  • Temperature Dependence: The solubility of many fluoride salts may increase with temperature, highlighting the importance of thermodynamic conditions in determining their behavior in solutions.

In summary, the solubility of fluoride compounds varies widely, from highly soluble salts to practically insoluble ones. Understanding these solubility attributes is crucial for harnessing the potential of fluoride in various scientific and industrial applications.

Interesting facts

Interesting Facts About Fluoride

Fluoride is a fascinating chemical compound that plays a significant role in various fields, particularly in dental health. Here are some engaging facts about fluoride:

  • Dental Health Champion: Fluoride is renowned for its ability to prevent tooth decay. It strengthens tooth enamel, making it more resistant to acids produced by plaque bacteria.
  • Source of Controversy: While many endorse fluoride for its dental benefits, it has sparked debates regarding its use in drinking water. Proponents highlight its effectiveness, while opponents raise concerns about possible health risks.
  • Natural Occurrence: Fluoride can be found naturally in water sources, soil, and even in some foods. It is commonly sourced from minerals like fluorite and cryolite.
  • Industrial Applications: Beyond dental use, fluoride compounds have applications in the manufacturing of aluminum, uranium extraction, and as a flux in metallurgy.
  • Fluoride in Nature: Creatures such as marine animals can absorb fluoride from their environment. Interestingly, some studies suggest that certain phytoplankton may also utilize fluoride in their growth processes.

As Dr. David W. C. van Harten, a renowned dental researcher, aptly said: "Fluoride is perhaps the most influential factor in the fight against tooth decay." With its unique properties and diverse applications, fluoride remains an important topic of discussion within both scientific and public domains.

In conclusion, whether you view it as a health boon or a source of contention, fluoride’s impact on our lives is undeniable and warrants further exploration.

Synonyms
fluoride
fluoride ion
16984-48-8
Fluoride ion(1-)
Perfluoride
Fluorine ion
Fluoride(1-)
Fluoride ion(F-)
Fluorine ion(1-)
Drinking water, fluoride treated
F-
UNII-Q80VPU408O
Q80VPU408O
FLURORIDE-ION
FLUORINE ION(F1-)
DTXSID9049617
CHEBI:17051
F(-)
Fluorine-
Topex Neutral pH Fluoride Gel
DTXCID3029576
Topex Neutral pH Fluoride GelMint
Topex Neutral pH Fluoride GelStrawberry
FLUORIDE STANDARD
MFCD00144315
Fluoride dust
Fluoride Standard: F- @ 1000 microg/mL in H2O
Fluoride Standard: F- @ 10000 microg/mL in H2O
Fluorides
Fluoride as dust
Fluoride Ion Chromatography Standard: F- @ 100microg/mL in H2O
FLUORIDE [VANDF]
CHEMBL1362
Fluoride Standard: F- @ 100 microg/mL in H2O
BDBM26978
AKOS015903717
DB11257
NS00075546
C00742
Q407350