A Rapid Extractive Spectrophotometric Method for the Determination of Tin with 6-Chloro-3-hydroxy-2-(2′-thienyl)-4-oxo-4<i>H</i>-1-benzopyran

<table>Chemical Structure of CHTB.</table>

Advances in Chemistry

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Figure 4

Figure 4: A Rapid Extractive Spectrophotometric Method for the Determination of Tin with 6-Chloro-3-hydroxy-2-(2′-thienyl)-4-oxo-4<i>H</i>-1-benzopyran 

Advances in Chemistry

A Rapid Extractive Spectrophotometric Method for the Determination of Tin with 6-Chloro-3-hydroxy-2-(2′-thienyl)-4-oxo-4H-1-benzopyran

Figure 4