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Citation: Wang Peng-Fei, Wu Shi-Kang. The Change of Absorption Spectrum of 4-Hydroxybenzylidene Malononitrile Solution Under Conditions of Different pH Value[J]. Acta Physico-Chimica Sinica, ;1991, 7(05): 582-585. doi: 10.3866/PKU.WHXB19910513 shu

The Change of Absorption Spectrum of 4-Hydroxybenzylidene Malononitrile Solution Under Conditions of Different pH Value

1.
Institute of Photographic Chemistry, Academia Sinica, Beijing 100101

Received Date: 4 April 1990
Available Online: 15 October 1991

The absorption spectra of 4-hydroxybenzylidene malononitrile in different solvent systems have been studied in this work. It was found that this compound has a proton equilibrium under the different pH condition that results in a variation of absorption spectra observed. Thereby, the title compound is expected to be used as a new acidic indicator in nonaqueous media.
- 4-Hydroxybenzylidene malononitrile; Proton equlilibrium; Acidicindicator in nonaqueous media
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