Xanthene pigments

Japanese: キサンテン色素 - きさんてんしきそ
Xanthene pigments

…They have come to be widely used due to their vivid colors and good color transferability. However, tar-based dyes are chemically structured as azo dyes and xanthene dyes, and compounds with these structures are often toxic. Therefore, tests are conducted on animals for tar-based dyes, and those found to be toxic are banned from use. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…その色彩の鮮やかさと色伸びのよさから,広く使われるようになった。しかし,タール系色素は化学構造的にはアゾ色素,キサンテン色素などであり,これらの構造をもつ化合物は毒性をもつことが多い。そこで,タール系色素については動物を用いた試験が実施され,毒性の認められたものは使用禁止処置がとられている。…

※「キサンテン色素」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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