| Abstract: | Zirconium reacts with 2,2???,4???-trihydroxyazobenzene-5-sulfonic acid in acid solutions to Form two complexes in which the ratios of dye to zirconium are 1 to 1 and 2 to 1. Both complexes are true chelates, with zirconium acting as a bridge between the two orthohydroxy dye groups. Apparent equilibrium constants for the reactions to form each of the complexes are determined. The reactions are used as a basis for the determination of the active component in the dye and a graphical method for the determination of reagent purity is described. Four absorption spectra covering the wave length region from 350 to 750 m?? are given, which completely define the color system associated with the reactions in solutions where the hydrochloric acid concentration ranges from 0.0064N to about 7N. |
| Genre: | Article |
| ProdID: | 70010774 |
| Citation Author: | Fletcher, M. H. |
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| Citation End Page: | 1836 |
| Citation Issue: | 13 |
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| Citation Language: | English |
| Citation Larger Work Title: | Analytical Chemistry |
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| Citation Number Of Pages: | 10 |
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| Citation Search Results Text: | Theoretical study of the reaction between 2,2???,4???-trihydroxyazobenzene-5-sulfonic acid and zirconium; 1960; Article; Journal; Analytical Chemistry; Fletcher, M. H. |
| Citation Start Page: | 1827 |
| Citation Volume: | 32 |
| Citation Year: | 1960 |
| Type: | citation/reference |
| Text: | Theoretical study of the reaction between 2,2???,4???-trihydroxyazobenzene-5-sulfonic acid and zirconium; 1960; Article; Journal; Analytical Chemistry; Fletcher, M. H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1960 00:00 -0600 |
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