Glassy selenium - Glassy selenium

Japanese: ガラス状セレン - がらすじょうせれん
Glassy selenium - Glassy selenium


[nature]
The main allotropes are amorphous, monoclinic, and gray (metallic) selenium. Amorphous selenium is produced in black (red in thin layers) glass form obtained by rapid cooling of molten selenium, and in red powder form obtained by reduction of selenite. Powdered selenium is soluble in carbon disulfide, and the crimson-colored α- and β-monoclinic forms are produced when the solution is evaporated and crystallized below 72°C.

*Some of the terminology explanations that mention "glassy selenium" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:


[性質]
 おもな同素体として,無定形セレン,単斜晶系セレン,灰色(金属)セレンがある。無定形セレンには,融解セレンの急冷による黒色(薄層では赤色)のガラス状セレンと,亜セレン酸塩の還元による赤色の粉末セレンがある。粉末セレンは二硫化炭素に可溶で,この溶液を72℃以下で蒸発結晶化すると深紅色のα形およびβ形の単斜晶系セレンが生成する。…

※「ガラス状セレン」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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