Barium fluoride , AR,99.0% , 7787-32-8
Synonym(s):
Barium difluoride;Barium fluoride
CAS NO.：7787-32-8
Empirical Formula: BaF2
Molecular Weight: 175.32
MDL number: MFCD00003450
EINECS: 232-108-0
PRODUCT Properties
| Melting point: | 1354 °C |
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| Boiling point: | 2260 °C(lit.) |
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| Density | 4.89 g/mL at 25 °C(lit.) |
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| vapor pressure | 0Pa at 20℃ |
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| refractive index | 1.4741 |
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| Flash point: | 2260°C |
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| storage temp. | Store at +5°C to +30°C. |
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| solubility | 1.2g/l |
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| form | random crystals |
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| color | White |
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| Specific Gravity | 4.89 |
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| Water Solubility | 1.6 g/L (20 ºC) |
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| Sensitive | Hygroscopic |
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| Crystal Structure | CaF2 type |
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| crystal system | Cube |
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| Merck | 14,974 |
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| Solubility Product Constant (Ksp) | pKsp: 6.74 |
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| Space group | Fm3m |
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| Lattice constant |
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| Exposure limits | ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
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| Dielectric constant | 7.3600000000000003 |
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| Stability: | Stable. Incompatible with acids. |
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| InChIKey | OYLGJCQECKOTOL-UHFFFAOYSA-L |
Description and Uses
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.
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.
Safety
| Symbol(GHS) |  GHS06 |
| Signal word | Danger |
| Hazard statements | H301-H332 |
| Precautionary statements | P261-P264-P270-P271-P301+P310-P304+P340+P312 |
| Hazard Codes | Xn,T |
| Risk Statements | 20/22 |
| Safety Statements | 28-28A |
| 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 |
| Toxicity | LD50 orally in Rabbit: 250 mg/kg |
