Phenolphthalein From ReAgent
ReAgent can supply pure phenolphthalein:
Along with a number of ready made solutions in the following strengths:
* Phenolphthalein 1%* Phenolphthalein 0.5% w/v
* Phenolphthalein 0.2% w/v
* Phenolphthalein 0.05% w/v
If you require phenolphthalein in a different strength solution, volume or grade please:
Phenolphthalein is an indicator, and a very commonly used one at that. It is a white powder in pure form. One of the most frequent uses of this product is for detecting end-points in acid based titrations. For this application, phenolphthalein is effective for many different acids, such as hydrochloric acid.
To detect the strength of hydrochloric acid, begin by filling a vessel with hydrochloric acid. Then add some indicator, like phenolphthalein. It is worth noting at this point that phenolphthalein cannot be added directly, it should be dissolved in a solvent (e.g. Industrial Methylated Spirits (IMS) / Denatured Alcohol). Once the indicator has been added, the solution can then be titrated using a base of a known concentration, for example, sodium hydroxide. When the solution turns pink, it shows the end-point of the titration and you can calculate the strength of the hydrochloric acid from the amount of sodium hydroxide required.
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