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酸碱指示剂
[试剂] acid-base indicator
PH indicator
PH indicator
- 一种棕色或金属绿色染料，C20H 12O 7，用作酸碱指示剂和用于给丝织物染色。
A brown or metallic green dye, C20H 12O 7, used as a pH indicator and in dyeing textiles. - 研究了酸碱指示剂茜素黄R颜色的模糊特性。
The fuzzy character of colour of the acid base indicator alizarin yellow R is studied in the paper. - 在一定酸碱性的甘氨酸溶液中加入适当的酸碱指示剂，可以实现颜色随溶液温度的变化而变化。
The pH response to temperature varied in different pH ranges of the aqueous solutions, and colors changed when acid-base indicators were added to the aqueous solution.
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