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Phthalein dyes are a
class of dyes
mainly used as pH indicators, due to
their ability to
change colors depending on pH. They are
formed by the reaction...
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Thymolphthalein is a
phthalein dye used as an acid–base (pH) indicator. Its
transition range is
around pH 9.3–10.5.
Below this pH, it is colorless; above...
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Bromothymol blue (also
known as
bromothymol sulfone phthalein and BTB) is a pH indicator. It is
mostly used in
applications that
require measuring substances...
- and pink in
basic solutions. It
belongs to the
class of dyes
known as
phthalein dyes.
Phenolphthalein is
slightly soluble in
water and
usually is dissolved...
- o-Cresolphthalein is a
phthalein dye used as a pH
indicator in titrations. It is
insoluble in
water but
soluble in ethanol. Its
solution is colourless...
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Bromsulfthalein (also
known as bromsulphthalein, bromosulfophthalein, and BSP) is a
phthalein dye used in
liver function tests.
Determining the rate of
removal of the...
- α-Naphtholphthalein (C28H18O4) is a
phthalein dye used as a pH
indicator with a
visual transition from colorless/reddish to
greenish blue at pH 7.3–8...
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synthesis and
description of the
plant dye indigo, the
discovery of the
phthalein dyes, and the
investigation of polyacetylenes,
oxonium salts, nitroso...
- with acid and base, and thus
serve as pH indicators.
Zelyonka attack Phthalein dye
Wikimedia Commons has
media related to
Triarylmethane dyes. Gessner...
-
amide Lactim, a
cyclic imide Lactide, a
cyclic diester Halolactonization Phthalein "lactones",
Compendium of
Chemical Terminology, 2.3.3,
International Union...
