| Crystal System |
Qhov chaw lattice ntawm SrF2 belongs rau lub cubic system, thiab nws cov calcium fluoride qauv muaj ib tug lattice tas li ntawm ib tug =0.5781 nm thiab Sr–F=0.2504 nm. Lub dav hlau cleavage yog (111) - uas yog, octahedron yog tsim los ntawm cleavage. |
| Chemical Properties |
Dawb hmoov. Soluble hauv hydrochloric acid thiab hydrogen fluoride; insoluble hauv dej. |
| Chemical Properties |
Strontium fluoride, tseem hu ua strontium difluoride thiab strontium (II) fluoride, yog fluoride ntawm strontium. Nws yog ib qho ruaj khov nkig dawb crystalline khoom. Nws tsim lub ntsej muag-centered cubic crystals, nrog cov qauv ntawm calcium fluoride. Nws yuav luag insoluble hauv dej. Strontium fluoride yog npaj los ntawm cov tshuaj tiv thaiv ntawm strontium chloride nrog cov roj fluorine, los ntawm kev ua ntawm hydrofluoric acid ntawm strontium carbonate, los yog ntxiv ntawm potassium chloride rau strontium chloride tov. Nws irritates qhov muag thiab tawv nqaij, thiab muaj teeb meem thaum nqus los yog noj. |
| Lub cev muaj zog |
Strontium fluoride, SrF2, kuj hu ua "strontium difluoride" thiab "strontium (II) fluoride", yog ib qho ruaj khov, nkig, dawb crystalline khoom nrog lub melting point ntawm 1477 degree thiab lub boiling point ntawm 2460 degree . Nws qhov hnyav molecular yog 125.62 g / mol. Nws qhov ceev yog 4.24 g / cm3. Nws cov ntsiab lus melting kuj tau muab raws li 1463 degree thiab qhov kub ntawm 2489 degree. Nws yog insoluble zoo vim nws solubility hauv dej yog 0.00012 g / 100 ml dej ntawm 18 degree.
SrF2 yuav luag insoluble hauv dej (nws tus nqi KSP yog kwv yees li 4.33 × 109ntawm 25 degree. Nws irritates qhov muag thiab tawv nqaij, thiab muaj teeb meem thaum nqus los yog noj. |
| Siv |
Strontium fluoride yog pob tshab rau lub teeb nyob rau hauv lub wavelengths ntawm lub tshuab nqus tsev UV (150 nm) mus rau ze IR (11 hli). Nws cov khoom kho qhov muag yog nruab nrab rau CaF2 thiab BaF2. Strontium fluoride yog siv los ua cov khoom siv kho qhov muag rau ib qho me me ntawm cov ntawv thov tshwj xeeb, piv txwv li, ua cov txheej txheem kho qhov muag ntawm cov lo ntsiab muag thiab kuj yog ib qho thermoluminescent dosimeter siv lead ua. Lwm qhov kev siv yog raws li tus neeg nqa khoom90Sr radioisotope hauv thermoelectric generators. SrF2 kuj tseem siv los ua ib qho siv lead ua rau lasers. |
| Siv |
Strontium fluoride yog siv los ua cov khoom siv kho qhov muag pob tshab los ntawm lub tshuab nqus tsev ultraviolet (150 nm) mus rau infrared (11 μm) rau ntau yam me me ntawm kev siv tshwj xeeb. Nws cov khoom kho qhov muag yog nruab nrab rau calcium fluoride thiab barium fluoride. Nws kuj tseem siv los ua cov txheej txheem kho qhov muag ntawm cov lo ntsiab muag. |
| Siv |
Hloov rau lwm cov fluorides, kev siv hluav taws xob thiab kho qhov muag, ib qho siv lead ua rau lasers, hightemperature qhuav-film lubricants. |
| Kev npaj |
Strontium fluoride yog tsim los ntawm fluorination ntawm strontium dichloride, los yog los ntawm kev ua ntawm hydrofluoric acid ntawm strontium carbonate:
SrCl2 (aq)＋ F2 (gas) → SrF2 (khoom) + Cl2 (gas)
SrCO3 + 2HF → SrF2 + CO2 + H2O
Nco ntsoov tias thawj cov tshuaj tiv thaiv nyob ntawm qhov insolubility ntawm SrF2 hauv dej. Strontium fluoride yog dej-insoluble qhov chaw siv rau hauv daim ntawv thov oxygen-sensitive, xws li hlau ntau lawm txij thaum nws nyob rau hauv nonhygroscopic. |
| Hazard |
Cov khoom siv tshuaj lom. |
| Flammability thiab Explosibility |
Tsis cais |
| Kev ruaj ntseg Profile |
Muaj tshuaj lom los ntawm txoj hauv kev. Mob me me los ntawm kev noj. Thaum rhuab mus rau decomposition nws emits cov pa phem ntawm F-. Saib kuj FLUORIDES thiab STRONTIUM COMPOUNDS. |
