Naphtholphthalein
Encyclopedia
α-Naphtholphthalein is a pH indicator
PH indicator
A pH indicator is a halochromic chemical compound that is added in small amounts to a solution so that the pH of the solution can be determined visually. Hence a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius model. Normally, the indicator causes the...

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External links

  • http://www.sigmaaldrich.com/catalog/search/ProductDetail?ProdNo=N8257&Brand=SIGMA
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