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en.wikipedia.org/wiki/Phenolphthalein

Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as ... GHS signal word, Danger. GHS hazard statements. H341 , H350 , ...

www.chemguide.co.uk/physical/acidbaseeqia/indicators.html

Describes how indicators work, and their use in various acid-base titrations. ... For litmus, it so happens that the 50 / 50 colour does occur at close to pH 7 - that's why ... Phenolphthalein is another commonly used indicator for titrations, and is ...

sciencing.com/phenolphthalein-change-color-5271431.html

Apr 24, 2017 ... Phenolphthalein is a mildly acidic compound that has a chemical formula of C20H14O4. It is primarily used as a pH indicator, allowing chemists ...

www.digipac.ca/chemical/mtom/contents/chapter3/phenolphthalein.htm

Phenolphthalein in acid (click to display its Chime image) ... Phenolphthalein does not dissolve very well in water, so for titrations it is usually prepared in alcohol ...

chemistry.elmhurst.edu/vchembook/186indicator.html

Whereas most dyes do not change color with the amount of acid or base present, there ... Phenolphthalein is an indicator of acids (colorless) and bases (pink).

researchthetopic.wikispaces.com/How+does+phenolphthalein+work%3F+Part+1

Sep 30, 2011 ... Phenolphthalein can be used to indicate if a liquid is an acid or a base. ... All you do is place the strip of paper in whatever substance you want ...

www.ch.ic.ac.uk/vchemlib/course/indi/indicator.html

Phenolphthalein is a colourless, weak acid which dissociates in water forming pink anions. Under acidic conditions, the equilibrium is to the left,and the ...

pubchem.ncbi.nlm.nih.gov/compound/phenolphthalein

phenolphthalein | C20H14O4 | CID 4764 - structure, chemical names, physical and chemical properties, ... (Multivolume work). ..... Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician.

www.quora.com/How-does-Phenolphthalein-work

Phenophthalien (HIn) has the formula C20H14O4. The addition/removal of protons and restructuring creates the color changes. It is colorless ...