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Formulate a Liquid that Loses its Color After Application
Challenge Type: math & sciences
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$1,000
top 10
28
submissions
DONE
108 months ago

We are in the process of developing a new chemical for the home. In order to make the chemical easy to use, we'd like to create a water-based formula which is colorful when wet (applied), but dries quickly and fades to colorless. This will help consumers know where the product has been applied.

Deliverables

Propose an ingredient we can use for this application. Submit:

1) The ingredient name/compound

2) Supplemental research or information to prove it fits the requirements (becomes colorless when dry)

Criteria:

The formulation has to be buffered at an acidic pH, between 4 and 5, for active ingredient stability. Any colorants used must have long term (2 year +) stability in solution.

Additional requirements: Low toxicity of the colorant and low to no odor.

    Submissions will be graded on the following criteria:
  • Meets Deliverables
  • Creativity
  • Clarity
Reward Tiers
5 Winners
will receive $150 each
5 Honorable Mentions
will receive $50 each
Leaderboard
$150.00 Oliver Lai University of California at Berkeley
$150.00 Neal Cardoza Purdue University
$150.00 Darshana Sivakumar Carnegie Mellon University
$150.00 mapetri University of Wisconsin
$150.00 Suyash Dhoot Indian Institute of Technology, Bombay
$50.00 Dimitrios Tsitsirigkos Boston University
$50.00 tim offan University of New Orleans
$50.00 Spencer Bridgwater Queen's University
$50.00 Phanindra Reddy Madduru University of South Florida
$50.00 Brian Jun University of Pennsylvania
Submission questions


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