A brown or metallic green dye, C20H 12o 7, used as a pH indicator and in dyeing textiles.
一种棕色或金属绿色染料，C20 H 12o 7，用作酸碱指示剂和用于给丝织物染色。
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To reduce the cost of DSSC. researchers have begun to pay close attention to the use of non-metallic organic photosensitizer dye as replacement of precious metal complexes in recent years.