Naphtholphthalein
α-Naphtholphthalein (C28H18O4) is a pH indicator with a visual transition from colorless/reddish to greenish/blue at pH 7.3–8.7.
| Naphtholphthalein (pH indicator) | ||
| below pH 7.3 | above pH 8.7 | |
| 7.3 | ⇌ | 8.7 |
Naphtholphthalein
英语百科
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