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碘化鍶

碘化鍶
IUPAC名
碘化鍶
识别
CAS号 10476-86-5(無結晶水)  checkY
SMILES
 
  • [I-].[Sr+2].[I-]
RTECS WK9275000
性质
化学式 SrI2(無結晶水)
SrI2·6H2O(六水合物)
摩尔质量 341.43 (無結晶水) g·mol⁻¹
外观 無色至白色晶體
密度 5.459 g/cm³(無結晶水)
4.415g/cm³(六結晶水)
熔点 507-645°C [1]
沸点 1773 °C (分解)
溶解性 64.0 g/100 mL (20°C)[2]
溶解性乙醇 3.1 g/100 ml (4°C) [2]
结构
晶体结构 斜方晶系, oP24
空间群 Pbca, No. 61
危险性
警示术语 R:R14 R34
安全术语 S:S22 S26 S27 S36/37/39S45 [3]
主要危害 腐蚀性
NFPA 704
0
1
0
 
相关物质
其他阴离子 氟化鍶
氯化鍶
溴化鍶
其他阳离子 碘化鈹
碘化鎂
碘化鈣
碘化鋇
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

碘化鍶(SrI2),由元素構成的,離子化合物,可溶於水,易潮解,在製藥中可用於替代碘化鉀[4]

反應

[编辑]

碘化鍶可由碳酸鍶碘化氫反應制備,相關反應方程式如下:

SrCO3 + 2HI → SrI2 + H2O + CO2

當暴露於空氣中時,碘化鍶會發黃。純淨的碘化鍶更柔軟和有韌性,而剛暴露時其表面出現粉紅色或桃色。可用於導電和導熱,建築物料,和各種合金的造成部分。在高溫下(有空氣),碘化鍶完全分解,生成氧化鍶和自由的[5]

參考資料

[编辑]
  1. ^ Turner, Jr., Francis M. (编), The Condensed Chemical Dictionary, New York: The Chemical Catalog Company: 449, 1920 [2007-12-10] 
  2. ^ 2.0 2.1
    177 g.100 mL (20 °C) Seidell, Atherton, Solubilities of Inorganic and Organic Substances, New York: D. Van Nostrand: 318, 1907 [2007-12-10] 
  3. ^ 400696 Strontium iodide anhydrous, beads, −10 mesh, 99.99+ %
  4. ^ Shoemaker, John V., A Practical Treatise on Materia Medica and Therapeutics 7th, Philadelphia: F. A. Davis: 854, 1908 [2007-12-10] 
  5. ^ Bartley, Elias H., Text-book of Medical and Pharmaceutical Chemistry 5th, Philadelphia: P. Blakiston: 267–268, 1898 [2007-12-10] 
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碘化鍶
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