Methyl yellow 甲基黄

（重定向自Butter Yellow）

Methyl yellow, or C.I. 11020, is a chemical compound which may be used as a pH indicator.

In aqueous solution at low pH, methyl yellow appears red. Between pH 2.9 and 4.0, methyl yellow undergoes a transition, to become yellow above pH 4.0.

单词	Butter Yellow
释义	Butter Yellow 原声例句篷车少年 It was butter, yellow and sweet. 那是黄油，黄色的，甜甜的。英语百科 Methyl yellow 甲基黄（重定向自Butter Yellow） Methyl yellow, or C.I. 11020, is a chemical compound which may be used as a pH indicator. In aqueous solution at low pH, methyl yellow appears red. Between pH 2.9 and 4.0, methyl yellow undergoes a transition, to become yellow above pH 4.0.
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