Lead(II) fluoride is the
inorganic compound with the formula
Pb F2. It is a white solid. It exists as both an
orthorhombic and
cubic forms
Form is the shape, visual appearance, or configuration of an object. In a wider sense, the form is the way something happens.
Form also refers to:
*Form (document), a document (printed or electronic) with spaces in which to write or enter data
* ...
.
Uses
Lead(II) fluoride is used in low melting
glass
Glass is a non-crystalline, often transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling ( quenching ...
es, in glass coatings to reflect
infrared
Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...
rays, in
phosphors
A phosphor is a substance that exhibits the phenomenon of luminescence; it emits light when exposed to some type of radiant energy. The term is used both for fluorescent or phosphorescent substances which glow on exposure to ultraviolet or v ...
for television-tube screens, and as a catalyst for the manufacture of
picoline Picoline refers to any of three isomers of methylpyridine (CH3C5H4N). They are all colorless liquids with a characteristic smell similar to that of pyridine. They are miscible with water and most organic solvents.
The CAS number of an unspecified ...
.
The
Muon g−2 experiment uses scintillators in conjunction with silicon
photomultiplier A photomultiplier is a device that converts incident photons into an electrical signal.
Kinds of photomultiplier include:
* Photomultiplier tube, a vacuum tube converting incident photons into an electric signal. Photomultiplier tubes (PMTs for sh ...
s.
[Via inSPIRE]
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Preparation
Lead(II) fluoride can be prepared by treating lead(II) hydroxide or lead(II) carbonate
Lead(II) carbonate is the chemical compound with the chemical formula . It is a white solid with several practical uses, despite its toxicity. It occurs naturally as the mineral cerussite.
Structure
Like all metal carbonates, lead(II) carbonate a ...
with hydrofluoric acid:[
: Pb(OH)2 + 2 HF → PbF2 + 2 H2O
Alternatively, it is precipitated by adding hydrofluoric acid to a lead(II) salt solution, or by adding ]potassium fluoride
Potassium fluoride is the chemical compound with the formula KF. After hydrogen fluoride, KF is the primary source of the fluoride ion for applications in manufacturing and in chemistry. It is an alkali halide and occurs naturally as the rare ...
to a lead(II) nitrate
Lead(II) nitrate is an inorganic compound with the chemical formula Pb( NO3)2. It commonly occurs as a colourless crystal or white powder and, unlike most other lead(II) salts, is soluble in water.
Known since the Middle Ages by the name plumbu ...
solution.[Arnold Hollemann, Egon Wiberg, 101st ed., de Gruyter 1995 Berlin; ]
: 2 KF + Pb(NO3)2 → PbF2 + 2 KNO3
It appears as the very rare mineral fluorocronite.
References
Fluorides
Lead(II) compounds
Metal halides
Phosphors and scintillators
Reagents for organic chemistry
Glass compositions
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