| Identification | More | [Name]
Barium fluoride | [CAS]
7787-32-8 | [Synonyms]
BARIUM FLUORIDE
BARIUM (II) FLUORIDE
bariumdifluoride
bariumfluoride(baf2)
baryumfluorure
Barium fluoride white powder
Barium fluoride 99
barium fluoride optical grade
BARIUM FLUORIDE, 99.99%
BARIUM FLUORIDE RANDOM CRYSTALS 99.9+
BARIUM FLUORIDE, POWDER, LESS THAN OR EQ UAL TO 5 MICRONS, 99%
BARIUM FLUORIDE POWDER LESS THAN &
BARIUM FLUORIDE, ANHYDROUS, POWDER, 99.9 99%
BARIUM FLUORIDE, PRECIPITATED, 99.999%
BARIUM FLUORIDE, RANDOM CRYSTALS 99.9+% OPTICAL GRADE
BARIUM FLUORIDE, (BAF2) OPTICAL WINDOW‘F5MM, 99.9%, 1.48NM'10600, 220-11000NM, 1280C
BARIUM FLUORIDE, GRANULAR 99.9%
BARIUM FLUORIDE, SPECTRO 99.995% (METALS BASIS)
BARIUM FLUORIDE, (99.9%-BA)
BARIUM FLUORIDE, (99.99%-BA) | [EINECS(EC#)]
232-108-0 | [Molecular Formula]
BaF2 | [MDL Number]
MFCD00003450 | [Molecular Weight]
175.32 | [MOL File]
7787-32-8.mol |
| Chemical Properties | Back Directory | [Description]
Barium fluoride appears as colourless, odourless crystals/white powder and is slightly
soluble in water but soluble in ethanol and methanol. When heated, barium fluoride
decomposes and emits toxic fumes of fluorine and barium. Barium fluoride is used as
a preopacifying agent and in enamel and glazing frits production. Its other use is in the
production of welding agents (an additive to some fluxes, a component of coatings for
welding rods and in welding powders). It is also used in metallurgy as a molten bath for
refining aluminium. | [Appearance]
White Fine Powder | [Melting point ]
1354 °C
| [Boiling point ]
2260 °C(lit.)
| [density ]
4.89 g/mL at 25 °C(lit.)
| [vapor pressure ]
0Pa at 20℃ | [refractive index ]
1.4741 | [Fp ]
2260°C | [storage temp. ]
Store at +5°C to +30°C. | [solubility ]
1.2g/l | [form ]
random crystals
| [color ]
White | [Specific Gravity]
4.89 | [Stability:]
Stable. Incompatible with acids. | [Water Solubility ]
1.6 g/L (20 ºC) | [Sensitive ]
Hygroscopic | [Merck ]
14,974 | [Solubility Product Constant (Ksp)]
pKsp: 6.74 | [Dielectric constant]
7.3600000000000003 | [Exposure limits]
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 | [InChIKey]
OYLGJCQECKOTOL-UHFFFAOYSA-L | [CAS DataBase Reference]
7787-32-8(CAS DataBase Reference) | [NIST Chemistry Reference]
Barium fluoride(7787-32-8) | [EPA Substance Registry System]
Barium fluoride (BaF2) (7787-32-8) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn,T | [Risk Statements ]
R20/22:Harmful by inhalation and if swallowed . | [Safety Statements ]
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) . | [RIDADR ]
UN 2811 6.1/PG 3
| [WGK Germany ]
1
| [RTECS ]
CQ9100000
| [Hazard Note ]
Toxic | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
28261990 | [Safety Profile]
A poison by ingestion
and intraperitoneal routes. Moderately toxic
by subcutaneous route. An experimental
teratogen. See also FLUORIDES and
BARIUM COMPOUNDS (soluble). When
heated to decomposition it emits toxic
fumes of F-. | [Toxicity]
LD50 orally in Rabbit: 250 mg/kg |
| Questions And Answer | Back Directory | [Description]
Barium fluoride (chemical formula: BaF2) is a inorganic salt consisting of barium and fluorine. It appears as a transparent crystal and is presented in the mineral frankdicksonite in nature.
Barium fluoride has many applications. It can be used for the manufacturing of optical components such as lenses as well as the windows of infrared spectroscopy. It can also be used as scintillators for detection of X-rays, Gamma rays and other high energy particles. In aluminium-metallurgy, it is used as additive in aluminium refining process. It can also be used as a flux and opacifying agent during the enamel and glazing first production. Moreover, it is also applied in the production of welding agents. Barium fluoride is made through the reaction between barium carbonate with ammonium fluoride.
| [References]
https://www.webelements.com/compounds/barium/barium_difluoride.html
https://en.wikipedia.org/wiki/Barium_fluoride
http://www.solvay.com/en/markets-and-products/featured-products/Barium-fluoride.html
|
| Hazard Information | Back Directory | [Chemical Properties]
White Fine Powder | [Physical properties]
Barium fluoride (BaF2), also known as barium(II)
fluoride, is a solid which can also be a transparent
crystal. Its molecular weight is 175.34 g/mol. It occurs
in nature as the mineral “Frankdicksonite”. It occurs as
a white powder with a melting point of 1290 and a boiling point of 2259°C. It is slightly soluble in water
(0.159 at 0.0°C and 0.162 g/100 ml of water at 20°C). The solid generally assumes the fluorite structure, but
when subjected to high pressure, changes to the PbCl2
structure. In the vapor phase, the BaF2 molecule is
nonlinear with an F–Ba–F angle of approximately 108°C.
| [Uses]
As a flux and opacifier in vitreous enamels; in the manufacture of carbon brushes for DC motors and generators; in heat-treating metals; in embalming; in glass manufacture. | [Application]
Barium fluoride is used as the transmission window in λ: 150 nm–10 mm and as the Reststrahlen filter in λ: 30–60 mm.
| [Production Methods]
A single crystal of Barium fluoride is grown from the melt solution by the Kyropoulos method and the Stockbarger method.
| [Flammability and Explosibility]
Nonflammable | [Solubility in water]
Barium fluoride is soluble in water with the solubility of 0.17 g/100 g H2O (10 ℃). It is also soluble in acid and ammonium chloride.
| [Purification Methods]
Wash it well with distilled H2O and dry it in a vacuum. Its solubility in H2O is 1.6g (10o), 1.6g (20o) and 1.62g (30o) per L, and is soluble in mineral acids and aqueous NH4Cl. It may be stored in glass bottles. [Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 234 1963.] | [Structure and conformation]
The space lattice of Barium fluoride (BaF2) belongs to the cubic system, and its calcium fluoride structure has a lattice constant of a=0.6187 nm and Ba–F=0.268 nm.
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