| Identification | More | [Name]
Strontium fluoride | [CAS]
7783-48-4 | [Synonyms]
STRONTIUM FLUORIDE
STRONTIUM (II) FLUORIDE
SrF2
Strontium fluoride (SrF2)
strontiumfluoride(srf2)
Strontiumfluoridemetalsbasiswhitepowder
Strontiumfluoridereagentwhitepowder
STRONTIUM FLUORIDE FOR GLASS INDUSTRY
STRONTIUM FLUORIDE, ANHYDROUS, POWDER, 9 9.99%
STRONTIUM FLUORIDE, PRECIPITATED, 99.99&
STRONTIUM FLUORIDE 99.99%
STRONTIUM FLUORIDE PURE
Strontiumfluoride,99%min
Strontiumfluoride,Puratronic?,99.99%(metalsbasis)
Strontiumfluoride,99%
Strontiumfluoride(99.99%-Sr)PURATREM
Strontiumfluoride,reagent,99%
strontium fluoride, puratronic
Strontium fluoride 99%
STRONTIUM FLUORIDE, REAGENT | [EINECS(EC#)]
232-000-3 | [Molecular Formula]
F2Sr | [MDL Number]
MFCD00011251 | [Molecular Weight]
125.62 | [MOL File]
7783-48-4.mol |
| Chemical Properties | Back Directory | [Appearance]
White powder | [Melting point ]
>1400 °C (lit.) | [Boiling point ]
2489 °C (lit.) | [density ]
4.24 g/mL at 25 °C(lit.)
| [refractive index ]
1.442 | [solubility ]
soluble in dilute acid solutions | [form ]
powder
| [color ]
White | [Specific Gravity]
4.24 | [Odor]
odorless | [Water Solubility ]
11.7 mg/100 mL (18 ºC) | [Merck ]
14,8842 | [Solubility Product Constant (Ksp)]
pKsp: 8.36 | [Dielectric constant]
6.4699999999999998 | [Exposure limits]
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 | [Stability:]
hygroscopic | [Uses]
Substitute for other fluorides, electronic and
optical applications, single crystals for lasers, hightemperature
dry-film lubricants. | [CAS DataBase Reference]
7783-48-4(CAS DataBase Reference) | [NIST Chemistry Reference]
Strontium fluoride(7783-48-4) | [EPA Substance Registry System]
7783-48-4(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RIDADR ]
UN3288 | [WGK Germany ]
2
| [RTECS ]
WK8925000
| [Hazard Note ]
Irritant | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
2826199090 | [Safety Profile]
Moderately toxic by intravenous route. Mildly toxic by ingestion. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES and STRONTIUM COMPOUNDS. |
| Questions And Answer | Back Directory | [Crystal System]
The space lattice of SrF2 belongs to the cubic system, and its calcium fluoride structure has a lattice
constant of a=0.5781 nm and Sr–F=0.2504 nm. The cleavage plane is (111)—that is, octahedron
is formed by the cleavage. |
| Hazard Information | Back Directory | [Chemical Properties]
Strontium fluoride, also called strontium difluoride and strontium(II) fluoride, is a fluoride of strontium. It is a stable brittle white crystalline solid. It forms face-centered cubic crystals, with structure of calcium fluoride. It is almost insoluble in water. Strontium fluoride is prepared by reaction of strontium chloride with fluorine gas, by action of hydrofluoric acid on strontium carbonate, or by addition of potassium chloride to strontium chloride solution. It irritates eyes and skin, and is harmful when inhaled or ingested. | [Chemical Properties]
White powder. Soluble in hydrochloric acid and hydrogen
fluoride; insoluble in water. | [Physical properties]
Strontium fluoride, SrF2, also called "strontium
difluoride" and "strontium (II) fluoride", is a stable, brittle, white crystalline solid with a melting point of 1477°C and a boiling point of 2460°C. Its molecular weight is 125.62 g/mol. Its density is 4.24 g/cm3. Its melting point has also been given as 1463°C and a boiling point of 2489°C. It is virtually insoluble since its solubility in water is 0.00012 g/100 ml of water at 18°C.
SrF2 is almost insoluble in water (its KSP value is
approximately 4.33×109 at 25°C. It irritates
eyes and skin, and is harmful when inhaled or
ingested. | [Preparation]
Strontium fluoride can be prepared by the reaction of
strontium chloride with fluorine gas, or by action of
hydrofluoric acid on strontium carbonate:
SrCl2 (aq)＋ F2 (gas)→SrF2 (solid)＋ Cl2 (gas)
SrCO3＋ 2HF→SrF2＋ CO2＋H2O
Note that the first reaction depends upon the
insolubility of SrF2 in water. Strontium fluoride is
a water-insoluble source for use in oxygen-sensitive applications, such as metal production since it in
nonhygroscopic. | [Hazard]
Toxic material. | [Flammability and Explosibility]
Notclassified |
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