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| methyl yellow ： ウィキペディア英語版 |
methyl yellow
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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.
==Safety==
It is a possible carcinogen. As "butter yellow", the agent had been used as a food additive before its toxicity was recognized. The result from consuming such chemicals is tumors on the liver.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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