焦磷酸铁
焦磷酸铁 | |
---|---|
英文名 | |
识别 | |
CAS号 | 10058-44-3(无水) 10049-18-0(九水) |
性质 | |
化学式 | Fe4(P2O7)3 |
745.224(无水) 907.368(九水) g·mol⁻¹ | |
外观 | 绿色或深黄色晶体(无水)[1] 黄色粉末(九水)[2] |
溶解性(水) | 难溶 |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
制备
焦磷酸铁可由Fe(PO3)3和FePO4按化学计量比1:3于氧气中在氧化铝坩埚里加热得到。起始原料可用Fe(NO3)3·9H2O和磷酸的反应制备。[3]
复分解反应也能得到焦磷酸铁:[4]
- 3 Na4P2O7(aq) + 4 FeCl3(aq) → Fe4(P2O7)3(s) + 12 NaCl(aq)
应用
用作补铁剂。
参考文献
- 焦磷酸铁(III) - 化学品安全技术说明书. Sigma-Aldrich. [2017-1-28]
- W.M.Haynes. CRC Handbook of Chemistry and Physics (97th edition). New York: CRC Press, 2016. pp 4-68
- LK Elbouaanani, B Malaman, R Gerardin, et al. Crystal Structure Refinement and Magnetic Properties of Fe4(P2O7)3 Studied by Neutron Diffraction and Mössbauer Techniques. Journal of Solid State Chemistry, 2002. 163 (2): 412-420. doi:10.1006/jssc.2001.9415
- L. Rossi et al. Colloidal iron(III) pyrophosphate particles (页面存档备份,存于). Food Chemistry, 2014. 151. 243–247. doi: 10.1016/j.foodchem.2013.11.050
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