phenolphthalein
A white or yellowish-white crystalline compound C₂₀H₁₄O₄ used in medicine as a…A white or yellowish-white crystalline compound C₂₀H₁₄O₄ used in medicine as a laxative and in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids.
» Phenolphthalein is an indicator used in acid-base titrations.
Фенолфталеин - индикатор, применяемый в кислотно-основном титровании. — Selena777
Фенолфталеїн — це індикатор, який використовується у кислотно-лужному титруванні. — oromashka
mervert1 · Tatoeba · CC BY 2.0 FRMeaning
1 senses(countable, uncountable)A white or yellowish-white crystalline compound C₂₀H₁₄O₄ used in medicine as a laxative and in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids.
After transfering the acid to a 150-mL Erlenmeyer flask, add 60 mL of deionized water and 2 drops of phenolphthalein.
Phenolphthalein
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
Examples
1 sentencesTranslations
5 languagesBy meaning 1
Origin
From phenol + phthalein.From phenol + phthalein.
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: phenolphthaleins| Singular | phenolphthalein |
|---|---|
| Plural | phenolphthaleins |
regular
Word family
4 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable