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RecommendRecommend PrintPrint



Disappearing Ink (Thymolphthalein)

Materials
3
Difficulty
1
Safety
2
An invisible ink is made using thymolphthalein.
  • See Also
    Invisible Ink (Phenolphthalein)
    Invisible Ink (Various Types)
  • Web Links
    www.stevespanglerscience.com/lab/experiments/vanishing-ink/
    Author : About Education
    Description :
    chemistry.about.com/od/demonstrationsexperiments/ss/disappearink.htm
    Author :
    Description :
  • Categories
    Acids and Bases | Colour Changes
Materials
1: Easy to get from supermarket or hardware store
2: Available in most school laboratories or specialist stores
3: Requires materials not commonly found in school laboratories

Difficulty
1: Can be easily done by teenagers
2: Can be done by science teachers
3: May require a more experienced teacher

Safety
1: Minimal safety procedures required
2: Some safety procedures required to perform safely
3: Only to be attempted with adequate safety procedures and trained staff

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