Mercury nitrate - Shousansuigin

[ I ] Mercury nitrate(I): _Hg2 ( _NO3 ) ₂ (525.19). Obtained by dissolving excess mercury in cold dilute nitric acid. Dihydrate (monoclinic system) crystallizes from aqueous solution. Density 4.8 g cm ^-3 . Easily soluble in water. When in aqueous solution, it hydrolyzes to precipitate pale yellow Hg( _NO3 )OH. To prevent oxidation by air, it is used together with mercury. Used as an analytical reagent in protein analysis. Toxic. [CAS 7782-86-7: _HgNO3 ･ _H2O ][CAS 14836-60-3: _Hg2 ( _NO3 ) ₂ ･ _2H2O ] [ II ] Mercury nitrate(II): Hg( _NO3 ) ₂ (324.60). Hemihydrate is obtained by reacting mercury with excess hot nitric acid and concentrating the solution. Melting point: 79 °C. Density: 4.3 g cm ^-3 . Deliquescent, completely decomposed into mercuric oxide and mercury when sufficiently diluted with water. Storage in aqueous solution must be acidified with nitric acid. Used in medicines, nitration of organic compounds, oxidizing agent, and in felt manufacturing. Toxic. [CAS 10045-94-0:Hg(NO ₃ ) ₂ ][CAS 7783-34-8:Hg(NO ₃ ) ₂ ･H ₂ O][CAS 10045-94-0:Hg(NO ₃ ) ₂ ･ n H ₂ O]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

【Ⅰ】硝酸水銀(Ⅰ)：Hg₂(NO₃)₂(525.19)．過剰の水銀を冷希硝酸に溶かすと得られる．水溶液からは二水和物(単斜晶系)を晶出する．密度4.8 g cm^－3．水に易溶．水溶液は加水分解して淡黄色のHg(NO₃)OHを析出する．空気による酸化を防ぐには水銀と共存させる．分析試薬，タンパク質の分析に用いる．有毒．[CAS 7782-86-7:HgNO₃･H₂O][CAS 14836-60-3:Hg₂(NO₃)₂･2H₂O]【Ⅱ】硝酸水銀(Ⅱ)：Hg(NO₃)₂(324.60)．水銀に過剰の熱硝酸を反応させて，溶液を濃縮すると0.5水和物が得られる．融点79 ℃．密度4.3 g cm^－3．潮解性で，水で十分に希釈すると完全に酸化水銀と水銀に分解する．水溶液での保存は硝酸酸性とする必要がある．医薬品，有機化合物のニトロ化，酸化剤，フェルト製造に用いられる．有毒．[CAS 10045-94-0:Hg(NO₃)₂][CAS 7783-34-8:Hg(NO₃)₂･H₂O][CAS 10045-94-0:Hg(NO₃)₂･nH₂O]

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