phenolphthalein Hear it!

phenolphthalein Definition

phenol·phthal·ein (fē′nōl t̸hal′ēn′, -ē in; --ft̸hal′-)

noun

a white to pale-yellow, crystalline powder, CHO, used as a laxative, in making dyes, and as an acid-base indicator in chemical analysis: it is red in a solution containing a base and colorless in a solution containing an acid

Etymology: phenol + phthalein

phenolphthalein Usage Examples

Modifies a noun

  • phosphate: Phenolphthalein phosphate ( PPP ) can be obtained from Sigma - catalog no.
  • indicator: You normally use phenolphthalein indicator and the end-point color change is from pink to colorless.
  • solution: The phenolphthalein solution remains clear where concrete is carbonated and turns pink where concrete is still alkaline.
  • change: However, the phenolphthalein changes color exactly where you want it to.

Browse dictionary entries near phenolphthalein

  1. ‹ phenology
  2. ‹ phenolic resin
  3. ‹ phenolate
  4. ‹ phenol red
  5. ‹ phenol
  6. ‹ phenocryst
  7. ‹ phenocopy
  8. ‹ phenobarbital
  9. ‹ pheno-
  10. ‹ Phenicia
  1. phenom ›
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  3. phenomenal ›
  4. phenomenalism ›
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  9. phenoxide ›
  10. phenoxy ›