Method for using petunia petal pigment as acid-base indicator

The invention relates to a method for using petunia petal pigment as an acid-base indicator, which comprises the steps of extracting the purple petunia petals with hydrochloric acid methanol solution to obtain pigment solution, then calibrating the color regularity of the petunia petal pigment solut...

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Bibliographic Details
Main Author WANG ZHANGQUAN
Format Patent
LanguageChinese
English
Published 28.07.2010
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:The invention relates to a method for using petunia petal pigment as an acid-base indicator, which comprises the steps of extracting the purple petunia petals with hydrochloric acid methanol solution to obtain pigment solution, then calibrating the color regularity of the petunia petal pigment solution at different pH values by standard solution with the pH of 1-14, and finally adding a few drops of petunia petal pigment solution to the solution to be tested so as to predict the pH range of the solution according to the color condition.
Bibliography:Application Number: CN20101120285