Sulfation

Japanese: sulfation
Sulfation

…If the battery is discharged too much or left without charging, large crystals of lead sulfate PbSO 4 , an electrical non-conductor, will precipitate on the plates, making it impossible to charge. This phenomenon is called sulfation. Care must be taken when repeatedly charging and discharging the battery. …

[Ricinoleic acid]

…When ricinoleic acid is reacted with concentrated sulfuric acid, chlorosulfonic acid, etc. at low temperatures (about 10°C), ricinoleic acid sulfate ester CH 3 (CH 2 ) 5 CH(OSO 3 H)CH 2 CH=CH(CH 2 ) 7 COOH is produced. This reaction is called sulfation, and the product is neutralized with ammonia or soda oil to produce sulfated oil (roth oil). [Uchida Yasuzo]. …

*Some of the terminology that mentions "sulfation" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…放電しすぎたり,充電しないで放置しておくと,電気不導体の硫酸鉛PbSO4の大結晶が極板上に析出して,充電不可能となる。この現象をサルフェーションsulfationという。充放電を繰り返しながら使用する注意が必要である。…

【リシノール酸】より

…リシノール酸に濃硫酸,クロロスルホン酸などを低温(約10℃)で作用させるとリシノール酸酸性硫酸エステルCH3(CH2)5CH(OSO3H)CH2CH=CH(CH2)7COOHを生ずる。このような反応を硫酸化sulfationといい,生成物をアンモニアまたはソーダ油で中和したのが硫酸化油(ロート油)である。【内田 安三】。…

※「sulfation」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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