Ammonium Bromide - Ammonium Xanthate

Japanese: 臭化アンモニウム - シュウカアンモニウム
Ammonium Bromide - Ammonium Xanthate
Chemical formula: NH 4 Br. Colorless cubic crystal. At high temperatures, it has a rock salt structure. At 137.8°C, it transitions to a low-temperature cesium chloride structure, and at even lower temperatures, it changes to a distorted cesium chloride structure. It has a pungent taste. Like ammonium chloride (NH 4 Cl), it dissociates and sublimes when heated. Specific gravity: 2.43. Refractive index: 1.7108. Solubility in 100 g of water: 69.7 g (15°C), 145.6 g (100°C). Soluble in ethyl alcohol, ether, acetone, and liquid ammonia. The aqueous solution of NH 4 Br 3 easily reacts with bromine to form the addition compound NH 4 Br 3 (ammonium tribromide).

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
化学式NH4Br。無色立方晶系の結晶。高温では岩塩型構造。137.8℃で低温型の塩化セシウム型構造に転移し,さらに低温でゆがんだ塩化セシウム型構造に変わる。辛味がある。塩化アンモニウムNH4Clと同様に,加熱により解離,昇華する。比重2.43。屈折率1.7108。水100gへの溶解度69.7g(15℃),145.6g(100℃)。エチルアルコール,エーテル,アセトン,液体アンモニアに可溶。水溶液は臭素と反応し,付加化合物NH4Br3(三臭化アンモニウム)をつくりやすい。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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