Abstract Used baking soda solution instead of NaOH and Na2CO3 solution as invisible ink, white vinegar as decolorizer, natural pigment alcohol leaching liquid as chromogenic agent, this paper carried out invisible ink experiment, which was a suitable extracurricular activity for its merits of safety in operation, simple, clear handwriting.
CHEN Xi-Xia, SI Shu-Feng. Invisible Ink Experiment with Natural Pigments as Chromogenic Agents[J]. Chinese Journal of Chemical Education, 2018, 39(1): 75-76.
