DCPIP
Encyclopedia : D : DC : DCP : DCPIP
| DCPIP | |
|---|---|
| |
| Systematic name | 2,6-dichlorophenol-indophenol |
| Chemical formula | CxHxNxOx |
| Molecular mass | xx.xx g/mol |
| Density | x.xxx g/cm3 |
| Melting point | xx.x °C |
| Boiling point | xx.x °C |
| CAS number | [xx-xx-xx] |
| SMILES | xxxx |
| [Chemical infoboxDisclaimer and references] | |
DCPIP (2,6-dichlorophenol-indophenol) is a blue chemical compound used as a redox dye due to the fact that when it is in its oxidised state it is blue. Once reduced (by addition of electrons) it becomes colourless. This reaction can be reversed, and the colourless DCPIP will turn blue again, when it is oxidized. It is often used in measurements of the electron transport chain in plants as it has a higher affinity for electrons than ferridoxin. It is also commonly used to determine the concentration of ascorbic acid in a solution.
Chemistry
DCPIP is an oxidising agent and in its natural state is a blue solid. However if a solution of the dye (also blue) is titrated with a reducing agent (such as ascorbic acid) it gains electrons and the newly formed compound is colourless.
Uses
Determining the concentration of Ascorbic Acid
A solution of DCPIP is made by dissolving the solid in distilled water, the solution is then filtered to ensure accuracy. This solution is then titrated with the ascorbic acid solution until a faint pink colour persists for 15 seconds indicating the end point of the titration.Reference
- Derek Denby, Chemistry Review, May 1996
See also
- Ascorbic Acid includes other methods for determining its concentration
External links
- For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].
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