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Strontium fluoride

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Strontium fluoride Basic information

Product Name:
Strontium fluoride
Synonyms:
  • STRONTIUM (II) FLUORIDE
  • STRONTIUM FLUORIDE
  • SrF2
  • Strontium fluoride (SrF2)
  • strontiumfluoride(srf2)
  • Strontiumfluoridemetalsbasiswhitepowder
  • Strontiumfluoridereagentwhitepowder
  • STRONTIUM FLUORIDE FOR GLASS INDUSTRY
CAS:
7783-48-4
MF:
F2Sr
MW:
125.62
EINECS:
232-000-3
Product Categories:
  • Inorganics
  • Crystal Grade Inorganics
  • metal halide
  • Strontium Salts
  • Chemical Synthesis
  • Inorganic Salts
  • Inorganic Chemicals
  • Strontium Salts
  • StrontiumMetal and Ceramic Science
  • Crystal Grade Inorganics
  • Materials Science
  • Metal and Ceramic Science
  • Strontium
  • Synthetic Reagents
  • Inorganic Salts
  • Salts
  • Synthetic Reagents
Mol File:
7783-48-4.mol
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Strontium fluoride Chemical Properties

Melting point:
>1400 °C (lit.)
Boiling point:
2489 °C (lit.)
Density 
4.24 g/mL at 25 °C (lit.)
refractive index 
1.442
form 
powder
color 
White
Specific Gravity
4.24
Water Solubility 
11.7 mg/100 mL (18 ºC)
Merck 
14,8842
Solubility Product Constant (Ksp)
pKsp: 8.36
Stability:
hygroscopic
CAS DataBase Reference
7783-48-4(CAS DataBase Reference)
NIST Chemistry Reference
Strontium fluoride(7783-48-4)
EPA Substance Registry System
Strontium fluoride (SrF2) (7783-48-4)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
RIDADR 
UN3288
WGK Germany 
2
RTECS 
WK8925000
Hazard Note 
Irritant
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III

MSDS

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Strontium fluoride Usage And Synthesis

Chemical Properties

White powder. Soluble in hydrochloric acid and hydrogen fluoride; insoluble in water.

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.

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.

Uses

Strontium 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.

Uses

Strontium 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.

Uses

Substitute for other fluorides, electronic and optical applications, single crystals for lasers, hightemperature dry-film lubricants.

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.

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.

Strontium fluoride Preparation Products And Raw materials

Raw materials

Strontium fluorideSupplier

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