Definition
phthaleins
noun
- Plural of phthalein; a class of synthetic organic compounds derived from phthalic anhydride, used as dyes, indicators, and pigments in chemistry and industry.
Usage: technical; chemistry
Examples
- Phenolphthalein and other phthaleins are commonly used as pH indicators in laboratory titrations.
- The chemist synthesized several phthaleins to test their properties as acid-base indicators.
- Phthaleins are valued in the textile industry for their bright, stable colors.
- The phthalein family of compounds includes both natural and synthetic members used in research.
- Students learned to identify phthaleins by their characteristic color changes in different pH environments.