Ammonium chrome alum - Ammonium chrome alum
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...The aqueous solution is purple when cold, but when heated to 50-70°C it turns green and the alum becomes difficult to crystallize. (b) Ammonium chrome alum (NH 4 )Cr(SO 4 ) 2 ･12H 2 O Specific gravity 1.717. Dissolves in water of crystallization at 94°C. *Some of the terminology that refers to "ammonium chrome alum" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
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…水溶液は冷時紫色であるが，50～70℃に熱すると緑色となり，ミョウバンが晶出しにくくなる。(b)アンモニウムクロムミョウバン(NH4)Cr(SO4)2･12H2O 比重1.717。94℃で結晶水に溶ける。… ※「アンモニウムクロムミョウバン」について言及している用語解説の一部を掲載しています。 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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