砷酸二氢钾
外观
砷酸二氢钾 | |
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别名 | Macquer's salt 砷酸一钾 |
识别 | |
CAS号 | 7784-41-0 ![]() |
PubChem | 516881 |
ChemSpider | 22977 |
SMILES |
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UN编号 | 1677 |
性质 | |
化学式 | KH2AsO4 |
摩尔质量 | 180.032 g·mol⁻¹ |
外观 | 白色固体 |
密度 | 2.867 g/cm3[1] |
熔点 | 288 °C(561 K) |
危险性 | |
GHS危险性符号![]() ![]() ![]() | |
GHS提示词 | 危险 |
H-术语 | H301, H331, H350, H400, H410 |
P-术语 | P201, P202, P261, P264, P270, P271, P273, P281, P301+310, P304+340, P308+313, P311, P321, P330 |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
砷酸二氢钾是一种无机化合物,化学式为KH2AsO4。它可由碳酸钾和五氧化二砷在水中反应制得。[2]
砷酸二氢钾在400 °C分解,生成偏砷酸钾。[2]它和硫化氢在pH 7.2~8时反应,可以得到KH2AsO3S。[3]它和三氟化锑反应,可以得到K(SbF2)HAsO4。[4]它和氢氟酸(40%)发生放热反应,生成K[AsF5OH]。[5]它和镁盐在溶液中反应,形成KMgAsO4·6H2O沉淀。[6]
参考文献
[编辑]- ^ "Hazardous Substances Data Bank" data were obtained from the National Library of Medicine (US). Retrieved from SciFinder. [2021-03-26].
- ^ 2.0 2.1 D. H. W. Dickson, A. R. Ubbelohde. The hydrogen bond in crystals. VIII. The isotope effect in KH2AsO4. Acta Crystallographica. 1950-01-01, 3 (1): 6–9 [2021-03-26]. ISSN 0365-110X. doi:10.1107/S0365110X50000021. (原始内容存档于2018-06-03).
- ^ Rakhimov, K.; Zhigarnovskii, B. M.; Polyakov, Yu. A.; Bugakov, V. I.; Orlovskii, V. P.; Kozhenkov, V. Yu.; Abdullaeva, M. I. Synthesis and investigation of the physicochemical properties of hydrothioarsenates of potassium, rubidium, and cesium(俄文). Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, 1987. 23 (10): 1691-1695. ISSN: 0002-337X.
- ^ K. Holz, R. Mattes. Verbindungen des Antimon(III) mit SbFnOm-Koordinationsspähre Kristallstrukturen von K(SbF2)HAsO4, NH4(SbF2)HAsO4 und Sb3O2F5. Zeitschrift für anorganische und allgemeine Chemie. 1989, 578 (1): 133–142 [2021-03-26]. ISSN 0044-2313. doi:10.1002/zaac.19895780115 (德语).
- ^ Lothar Kolditz. Herbert W. Roesky , 编. Fluoro and Fluorohydroxy Complexes of As, Sb, and Sn. Hoboken, NJ, USA: John Wiley & Sons, Inc. 2012-10-14: 117–120 [2021-03-26]. ISBN 9781118409466. doi:10.1002/9781118409466.ch20 (英语).
- ^ Zuldjevat Abdija, Metodija Najdoski, Violeta Koleva, Tomče Runčevski, Robert E. Dinnebier, Bojan Šoptrajanov, Viktor Stefov. Preparation, Structural, Thermogravimetric and Spectroscopic Study of Magnesium Potassium Arsenate Hexahydrate: Preparation of Magnesium Potassium Arsenate Hexahydrate. Zeitschrift für anorganische und allgemeine Chemie. 2014-12, 640 (15): 3177–3183 [2021-03-26]. doi:10.1002/zaac.201400265 (英语).
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