| slovo | definícia |
phenolphthalein
(encz) | phenolphthalein,fenolftalein n: Zdeněk Brož |
Phenolphthalein
(gcide) | Phenolphthalein \Phe`nol*phthal"e*in\, or Phenol phthalein
\Phenol phthalein\, n. (Chem.)
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 a pH indicator. It is sometimes used as a laxative in
veterinary medicine.
[Webster 1913 Suppl. +PJC] |
phenolphthalein
(wn) | phenolphthalein
n 1: a laxative used in many preparations under various trade
names; also used as an acid-base indicator in titrations
involving weak acids and strong bases because it is
brilliant red at high alkalinity and colorless below pH 8 |
| | podobné slovo | definícia |
Phenolphthalein
(gcide) | Phenolphthalein \Phe`nol*phthal"e*in\, or Phenol phthalein
\Phenol phthalein\, n. (Chem.)
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 a pH indicator. It is sometimes used as a laxative in
veterinary medicine.
[Webster 1913 Suppl. +PJC] |
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