Found 1 items, similar to Phenol phthalein.
English → English
Definition: Phenol phthalein
, n., or Phenol phthalein
A white or yellowish white crystalline substance, C20H14O4
formed by condensation of the anhydride of phthalic acid and
phenol. Its solution in alkalies is brilliant red, but is
decolorized by acids. This reaction, being very delicate, is
used as an indicator. It is sometimes used as a laxative in
[Webster 1913 Suppl. +PJC]
, n. [See Phthalic
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.
, 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
, n. [Gr. ? to show + -ol: cf. F. ph['e]nol.]
1. A white or pinkish crystalline substance, C6H5OH
produced by the destructive distillation of many organic
bodies, as wood, coal, etc., and obtained from the heavy
oil from coal tar.
Note: It has a peculiar odor, somewhat resembling creosote,
which is a complex mixture of phenol derivatives. It is
of the type of alcohols, and is called also phenyl alcohol
, but has acid properties, and hence is
popularly called carbolic acid
, and was formerly
called phenic acid
. It is a powerful caustic poison,
and in dilute solution has been used as an antiseptic.
2. Any one of the series of hydroxyl derivatives of which
phenol proper is the type.
(Chem.), pure crystallized phenol or
(Chem.), any one of a series of compounds which
are at once derivatives of both phenol and some member of
the fatty acid series; thus, salicylic acid is a phenol
(Chem.), any one of series of derivatives of
phenol and carbinol which have the properties of both
combined; thus, saligenin is a phenol alcohol.
(Chem.), any one of a series of compounds
having both phenol and aldehyde properties.
. See under Phthalein