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Hasil cari dari kata atau frase: Phthalein (0.01443 detik)
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English → English (gcide)
Definition: Phthalein
Phthalein
\Phthal"e*in\, n. [See
Phthalic.] (Chem.)
One of a series of artificial organic dyes made as
condensation products of the phenols with phthalic acid, and
well represented by phenol phthale["i]n. Their alkaline
solutions are fluorescent.
[1913 Webster]
Phenol phthalein, a white or yellowish white crystalline
substance made from phthalic acid and phenol. Its solution
in alkalies is brilliant red, but is decolorized by acids,
and as this reaction is exceedingly delicate it is used as
an indicator.
[1913 Webster]
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