Cu-PAN
Metal Indicator
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Product codeC016 Cu-PAN
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Chemical nameComposite preparation of Cu-EDTA and PAN(Ratio 11.1:1)
| Unit size | Price | Item Code |
|---|---|---|
| 10 g | ＄request | C016-10 |
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10 g
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Product Description
Cu-PAN, a mixture of Cu-EDTA and pyridylazo-naphthol PAN, is a very popular metal indicator for chelatometry. Usually, 20-50% aqueous dioxane (or isopropyl alcohol) or 50-70% aqueous methanol (or ethanol) is used as a solvent (1 g Cu-PAN per 100 ml solvent). The solution should be heated during the chelating titration.
Technical info
Chelate titration (acidic condition): Al, C, Co, Fe(III), Ga, Hg, In, Ni, V, Zn, rare earth metal ions
Chelate titration (alkaline condition): Ca, Cu, Mg, Mn(II)
References
Open References
1) H. Flaschka and H. Abdine, "EDTA Titrations Using Copper-PAN Complex as Indicator", Chem. Anal., 1956, 45, 58
Handling and storage condition
| Appearance： | Grayish red brown to yellowish brown powder |
|---|---|
| Solubility in Dioxane： | To pass test (clear, yellowish brown to deep yellowish brown) |
| Absorbance： | ≧ 0.500 (around 470 nm) |
| Sensitivity： | To pass test |
| Ambient temperature |
