Basic information
- CAS
7783-48-4- Standard SMILES
[F-].[F-].[Sr+2]- InChIKey
FVRNDBHWWSPNOM-UHFFFAOYSA-L- Molecular formula
- F2Sr
- Average molar mass
- 125.62 g/mol
- Monoisotopic mass
- 125.90241858
Overview
See also: Strontium fluoride (preferred).
Names & identifiers
- Preferred name
- Strontium(II) fluoride
- IUPAC
- strontium difluoride
- English name
- Strontium fluoride
- Molecular formula
- F2Sr
- Molecular weight
- 125.62
Names & synonyms
Strontium(II) fluoridestrontium(2+) difluorideStrontium fluoride, reagentstrontium(2+) ion difluorideSCHEMBL9790039SrF2Strontium fLSTRONTIUM FLUORIDEFluoride strontiumStrontium difluorideStrontiumfluoride,99%Strontium fluoride 99%
Show more names
STRONTIUM FLUORIDE PURESTRONTIUM (II) FLUORIDEstrontiumfluoride(srf2)
Database identifiers
- CAS
7783-48-4- PubChem CID
- 522681
Properties
Computed structural properties
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 3
- Formal charge
- 0
- Complexity
- 2.8
Physicochemical properties
- Melting point
- 1400 °C · >1400 °C (lit.)
- Boiling point
- 2489 °C · 2489 °C (lit.)
- Density
- 4.24 g/mL · 4.24 g/mL at 25 °C (lit.)
- refractive index
- 1.442 · 1.442
- solubility
- soluble in dilute acid solutions
- form
- powder
- color
- White
- Specific Gravity
- 4.24 · 4.24
- Odor
- odorless
- Water Solubility
- 11.7 mg/100 · 11.7 mg/100 mL (18 ºC)
- Specific Heat Capacity
- 0.56 J/ · Cp(crystal): 0.56 J/(g·K), at 25℃
- Crystal Structure
- 2 type · CaF2 type
- crystal system
- Cube
- Merck
- 14 · 14,8842
- Solubility Product Constant (Ksp)
- 8.36 · pKsp: 8.36
- Space group
- 3 m · Fm3m
- Lattice constant
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Safety data
- PPE
- dust mask type N95 (US), Eyeshields, Gloves
- wgk
- 2
- tsca
- TSCA listed
- rtecs
- WK8925000
- ridadr
- UN3288
- hs_code
- 2826199090
- risk_code
- 36/37/38
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xi
- hazard_note
- Irritant
- safety_code
- 26-36
- hazard_class
- 6.1
- Storage Class
- 11 - Combustible Solids
- packing_group
- III
- Hazard statements
- H315-H319-H335
- REACH Registrations
- Active
- Precautionary statements
- P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Chemistry & industry
Applications
UsesStrontium fluoride is used as an optical material transparent from vacuum ultraviolet (150 nm) to infrared (11 μm) for a small range of special applications. Its optical properties are intermediate to calcium fluoride and barium fluoride. It is also used as an optical coating on lenses.
UsesStrontium fluoride is transparent to light in the wavelengths from the vacuum UV (150 nm) to the near IR (11 mm). Its optical properties are intermediate to CaF2 and BaF2. Strontium fluoride is used as an optical material for a small range of special applications, for example, as an optical coating on lenses and also as a thermoluminescent dosimeter crystal. Another use is as a carrier of the 90Sr radioisotope in thermoelectric generators. SrF2 is also used as a single crystal for lasers.
UsesSubstitute for other fluorides, electronic and optical applications, single crystals for lasers, hightemperature dry-film lubricants.
Preparation methods
PreparationStrontium fluoride is synthesized by the fluorination of strontium dichloride, or by action of hydrofluoric acid on strontium carbonate:SrCl2 (aq)＋ F2 (gas)→SrF2 (solid)＋ Cl2 (gas)SrCO3＋ 2HF→SrF2＋ CO2＋H2ONote 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.
Upstream & downstream products
Upstream raw materials
Suppliers100 total
北京华美互利生物化工010-56205725 · [email protected]
Related reactions
0 records
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Compound notes
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