フッ化ストロンチウム

解説フッ化ストロンチウム,無色の立方晶系結晶．密度4.24 g cm－3．融点1463 ℃，沸点2460 ℃．空気中では1000 ℃ 以下で安定で，それ以上では酸化ストロンチウムになる．水に難溶，塩酸に可溶，フッ化水素酸，エタノール，アセトンに不溶．固体電解質成分，医薬品，光学レンズ，光学薄膜蒸着材，レーザー用単結晶などに用いられる． 森北出版「化学辞典（第2版）

使用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.

製造方法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＋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.