Resorcinolphthalein

1 definition found

From WordNet (r) 2.0 [wn]:

  resorcinolphthalein
       n : a yellow dye that is visible even when highly diluted; used
           as an absorption indicator when silver nitrate solution
           is added to sodium chloride in order to precipitate
           silver chloride (turns pink when no chloride ions are
           left in solution and negative fluorescein ions are then


           absorbed) [syn: {fluorescein}, {fluoresceine}, {fluorescent
           dye}]