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Strontiumfluorid

Strontium fluoride Struktur
7783-48-4
CAS-Nr.
7783-48-4
Bezeichnung:
Strontiumfluorid
Englisch Name:
Strontium fluoride
Synonyma:
SrF2;Strontium fL;STRONTIUM FLUORIDE;Fluoride strontium;Strontium difluoride;Strontiumfluoride,99%;Strontium fluoride 99%;STRONTIUM (II) FLUORIDE;strontiumfluoride(srf2);STRONTIUM FLUORIDE PURE
CBNumber:
CB6455417
Summenformel:
F2Sr
Molgewicht:
125.62
MOL-Datei:
7783-48-4.mol

Strontiumfluorid Eigenschaften

Schmelzpunkt:
>1400 °C (lit.)
Siedepunkt:
2489 °C (lit.)
Dichte
4.24 g/mL at 25 °C (lit.)
Brechungsindex
1.442
L?slichkeit
soluble in dilute acid solutions
Aggregatzustand
powder
Farbe
White
Wichte
4.24
Geruch (Odor)
odorless
Wasserl?slichkeit
11.7 mg/100 mL (18 ºC)
Crystal Structure
CaF2 type
crystal system
Cube
Merck 
14,8842
Solubility Product Constant (Ksp)
pKsp: 8.36
Space group
Fm3m
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.580.580.589090900.1947
Dielectric constant
6.4699999999999998
Expositionsgrenzwerte
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
Stabilit?t:
hygroscopic
CAS Datenbank
7783-48-4(CAS DataBase Reference)
NIST chemische Informationen
Strontium fluoride(7783-48-4)
EPA chemische Informationen
Strontium fluoride (SrF2) (7783-48-4)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xi
R-S?tze: 36/37/38
S-S?tze: 26-36
RIDADR  UN3288
WGK Germany  2
RTECS-Nr. WK8925000
Hazard Note  Irritant
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  2826199090
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" />
Sicherheit
P261 Einatmen von Staub vermeiden.
P304+P340 BEI EINATMEN: Die Person an die frische Luft bringen und für ungehinderte Atmung sorgen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.
P405 Unter Verschluss aufbewahren.

Strontiumfluorid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-S?tze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.

Chemische Eigenschaften

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.

Physikalische Eigenschaften

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.

Verwenden

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.

synthetische

Strontium 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+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.

Sicherheitsprofil

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.

Strontiumfluorid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Strontiumfluorid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

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7783-48-4(Strontiumfluorid)Verwandte Suche:


  • STRONTIUM (II) FLUORIDE
  • STRONTIUM 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
  • Strontium fluorideOptical Grade, ≥99%
  • Strontiumfluoride,reagent,99%
  • strontium fluoride, puratronic
  • Strontium fluoride 99%
  • Strontium fluoride, Puratronic(R), 99.99% (metals basis)
  • Strontium difluoride (as fluorine)
  • Strontium difluoride
  • Strontium Fluoride 99.9%
  • Strontium fluoride,99.99%,extra pure
  • Strontium fluoride, Puratronic (metals basis)
  • STRONTIUM FLUORIDE, REAGENT
  • Strontium fluoride anhydrous, powder, 99.99% trace metals basis
  • Strontium fluoride precipitated, 99.995% trace metals basis
  • Strontium fluoride, 99.99% trace metals basis
  • High pure Strontium Fluoride
  • Strontium fL
  • um 99.9%Strontium fluoride
  • Strontium Fluoride, 99.5%
  • Niobium Carbide (NbC) Sputtering Targets
  • Fluoride strontium
  • F2Sr Strontium fluoride 7783-48-4
  • Strontium fluoride, Puratronic&trade
  • Strontium fluoride powder
  • 7783-48-4
  • 7787-48-4
  • 2FSr
  • Inorganic Salts
  • Synthetic Reagents
  • Strontium
  • Inorganics
  • Crystal Grade Inorganics
  • metal halide
  • Strontium Salts
  • Chemical Synthesis
  • Inorganic Salts
  • Materials Science
  • Metal and Ceramic Science
  • Strontium
  • Synthetic Reagents
  • Inorganic Chemicals
  • Strontium Salts
  • StrontiumMetal and Ceramic Science
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