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The Use of Thermochromic Substances as a New Kind of Visual Indicator in Titripetry

 

作者: O.E. S. Godinho,   C. Pasquini,   R.R.Urzedo de Queiroz,   L.M. Aleixo,  

 

期刊: Analytical Letters  （Taylor Available online 1984）
卷期: Volume 17, issue 2  

页码: 135-142

 

ISSN:0003-2719

 

年代: 1984

 

DOI:10.1080/00032718408065272

 

出版商: Taylor & Francis Group

 

关键词: Thermochromic Indicators;Catalytic Thermometric Titrimetry;Thermometric Titrimetry;Titrimetry, Indicators.

 

数据来源: Taylor

 

摘要:

The use of the change of colour of a mixture of Ag2HgI4and Cu2HgI4for the detection of the end point of the titration of benzoic acid in the solvent mixture dimethylsulfoxide and acrylonitrile with potassium n-butoxide in n-butanol has been investigated. The results show the possibility of using thermochromic substances as a new kind of visual indicator in titrimetry. They may be employed in the cases where a suitable change in temperature occurs at the end point of the titration.

 

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