Red Pet - Akapet

Japanese: 赤ペト - あかぺと
Red Pet - Akapet

...Its main uses are in ointments and other medical applications (Vaseline) and as a rust inhibitor. Less refined oil is green and generally called blue petroleum, while treated with white clay it is light brown and called red petroleum, and when refined to a higher degree it becomes nearly colorless. The JIS classifies oils into four types according to color.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…用途は,軟膏など医薬用(ワセリン),またさび止め剤がおもなものである。精製度の低いものは緑色で一般に青ペトと呼ばれ,白土処理したものは淡褐色で赤ペトといい,さらに高度に精製すると無色に近くなる。JISでは色によって1~4号に分類している。…

※「赤ペト」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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