钨酸钡

钨酸钡
别名	钨白; 钨(VI)酸钡
识别
CAS号	7787-42-0
PubChem	4280986
ChemSpider	145169
SMILES	[O-][W](=O)(=O)[O-].[Ba+2];
InChI	1S/Ba.4O.W/q+2;;;2*-1;;
InChIKey	SJPVUFMOBDBTHQ-UHFFFAOYSA-N
性质
化学式	BaWO4
摩尔质量	385.16 g·mol⁻¹
外观	白色固体
密度	5.04 g·cm−3（25 °C）; 7.26 g·cm−3（高压形态）
熔点	1502 °C
溶解性（水）	不溶
结构
晶体结构	四方
晶格常数	a = 561.4 pm, c = 1271.5 pm
危险性
	GHS危险性符号;
H-术语	H302, H332
相关物质
其他阴离子	铬酸钡; 钼酸钡
其他阳离子	钨酸镁; 钨酸钙; 钨酸锶
	若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

钨酸钡是钡的钨酸盐，化学式 BaWO₄。

制备和性质

钨酸钡可以由硝酸钡和仲钨酸铵或钨酸钠的复分解反应而成。^[5]^[6]

Ba(NO₃)₂ + Na₂WO₄ → BaWO₄↓ + 2 NaNO₃

它是一种白色固体，^[3]在标准情况下是白钨矿（CaWO₄）结构的四方晶体。在超过 7 GPa的高压下，钨酸钡会转变成单斜晶系，结构类似褐钇铌矿（英语：fergusonite）（YNbO₄）。^[7]

用处

钨酸钡可用作激光技术中的移频器。^[8]它也用于X射线摄影和颜料。^[4]

参考资料

^ Kawada, I.; Kato, K.; Fujita, T. BaWO 4 -II (a high-pressure form). Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 1974-08-01, 30 (8): 2069–2071 [2021-07-24]. ISSN 0567-7408. doi:10.1107/S0567740874006431. （原始内容存档于2021-07-25）.
^ Ge, W. W.; Zhang, H. J.; Wang, J. Y.; Liu, J. H.; Xu, X. G.; Hu, X. B.; Jiang, M. H.; Ran, D. G.; Sun, S. Q.; Xia, H. R.; Boughton, R. I. Thermal and mechanical properties of BaWO4 crystal. Journal of Applied Physics. 2005, 98 (1): 013542. ISSN 0021-8979. doi:10.1063/1.1957125 （英语）.
^ ^3.0 ^3.1 ^3.2 MSDS-343137. Sigma-Aldrich. [2020-07-10].
^ ^4.0 ^4.1 Perry, Dale L. Handbook of Inorganic Compounds 2nd. CRC Press. 2011: 59. ISBN 978-1-4398-1461-1.
^ Vidya, S.; Solomon, Sam; Thomas, J. K. Synthesis, Characterization, and Low Temperature Sintering of Nanostructured BaWO₄ for Optical and LTCC Applications. Advances in Condensed Matter Physics. 2013, 2013: 1–11 [2021-07-24]. ISSN 1687-8108. doi:10.1155/2013/409620 . （原始内容存档于2021-07-25）（英语）.
^ Mohamed Jaffer Sadiq, M.; Samson Nesaraj, A. Soft chemical synthesis and characterization of BaWO₄ nanoparticles for photocatalytic removal of Rhodamine B present in water sample. Journal of Nanostructure in Chemistry. 2015, 5 (1): 45–54. ISSN 2008-9244. doi:10.1007/s40097-014-0133-y  （英语）.
^ Errandonea, D.; Pellicer-Porres, J.; Manjón, F. J.; Segura, A.; Ferrer-Roca, Ch.; Kumar, R. S.; Tschauner, O.; López-Solano, J.; Rodríguez-Hernández, P.; Radescu, S.; Mujica, A. Determination of the high-pressure crystal structure of BaWO₄ and PbW_O4. Physical Review B. 2006-06-05, 73 (22): 224103. ISSN 1098-0121. S2CID 55297808. arXiv:cond-mat/0602632 . doi:10.1103/PhysRevB.73.224103 （英语）.
^ Colin E., Webb; Jones, Julian D. C. Handbook of Laser Technology and Applications: Laser Design and Laser Systems.. CRC Press. 2004: 486 [2021-07-24]. ISBN 978-0-7503-0963-9. （原始内容存档于2021-08-26）.

[1] Kawada, I.; Kato, K.; Fujita, T. BaWO 4 -II (a high-pressure form). Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 1974-08-01, 30 (8): 2069–2071 [2021-07-24]. ISSN 0567-7408. doi:10.1107/S0567740874006431. （原始内容存档于2021-07-25）.

[2] Ge, W. W.; Zhang, H. J.; Wang, J. Y.; Liu, J. H.; Xu, X. G.; Hu, X. B.; Jiang, M. H.; Ran, D. G.; Sun, S. Q.; Xia, H. R.; Boughton, R. I. Thermal and mechanical properties of BaWO4 crystal. Journal of Applied Physics. 2005, 98 (1): 013542. ISSN 0021-8979. doi:10.1063/1.1957125 （英语）.

[Sigma-3] 3.0 ^3.1 ^3.2 MSDS-343137. Sigma-Aldrich. [2020-07-10].

[Perry-4] 4.0 ^4.1 Perry, Dale L. Handbook of Inorganic Compounds 2nd. CRC Press. 2011: 59. ISBN 978-1-4398-1461-1.

[5] Vidya, S.; Solomon, Sam; Thomas, J. K. Synthesis, Characterization, and Low Temperature Sintering of Nanostructured BaWO₄ for Optical and LTCC Applications. Advances in Condensed Matter Physics. 2013, 2013: 1–11 [2021-07-24]. ISSN 1687-8108. doi:10.1155/2013/409620 . （原始内容存档于2021-07-25）（英语）.

[6] Mohamed Jaffer Sadiq, M.; Samson Nesaraj, A. Soft chemical synthesis and characterization of BaWO₄ nanoparticles for photocatalytic removal of Rhodamine B present in water sample. Journal of Nanostructure in Chemistry. 2015, 5 (1): 45–54. ISSN 2008-9244. doi:10.1007/s40097-014-0133-y  （英语）.

[7] Errandonea, D.; Pellicer-Porres, J.; Manjón, F. J.; Segura, A.; Ferrer-Roca, Ch.; Kumar, R. S.; Tschauner, O.; López-Solano, J.; Rodríguez-Hernández, P.; Radescu, S.; Mujica, A. Determination of the high-pressure crystal structure of BaWO₄ and PbW_O4. Physical Review B. 2006-06-05, 73 (22): 224103. ISSN 1098-0121. S2CID 55297808. arXiv:cond-mat/0602632 . doi:10.1103/PhysRevB.73.224103 （英语）.

[8] Colin E., Webb; Jones, Julian D. C. Handbook of Laser Technology and Applications: Laser Design and Laser Systems.. CRC Press. 2004: 486 [2021-07-24]. ISBN 978-0-7503-0963-9. （原始内容存档于2021-08-26）.

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