dyes

white clover and anthoxanthin structure
Clover Color Chemistry
// Saturday, July 3, 2021 • Tom Kuntzleman
Recently as I was mowing my lawn, I noticed that some of the florets on white clover have a slight pink or purple color (Figure 1). Because anthocyanins often impart red, blue, and purple color to plants, fruits, and flowers,1,2 I wondered if these tiny pink florets in white clover contained anthocyanins.
text: Colorful Candy Chemistry
How Does the Rainbow Candy Experiment Work?
// Monday, February 8, 2021 • Tom Kuntzleman
Have you seen the rainbow candy experiment? It's a very simple experiment that involves pouring water into a plate that has M&M's candies or Skittles arranged in a pattern. Very curious shapes of sharply divided regions form spontaneously. How does this happen?! 
JCE November 2017 cover
Especially JCE: November 2017
// Saturday, November 18, 2017 • Erica K. Jacobsen
People tie dye cloth. People study chemistry. What makes putting the two things together such a popular activity in chemistry classrooms and science clubs? Recently, a photo showcasing American Chemical Society (ACS) ChemClub students in their completed shirts from a National Chemistry Week tie-dye event popped up in my Twitter feed.
McCormick's Color From Nature Berry Dye
Investigations of Chemicals in Natural Food Coloring. Part 2: Berry
// Monday, February 27, 2017 • Tom Kuntzleman
In this post I’ll be sharing a bit about the chemistry of the Berry food color found in McCormick’s Color from Nature food coloring. I will also describe some experiments and demonstrations that can be done using this food color.
Kool-aid, Cotton, and Intermolecular Forces
// Tuesday, October 4, 2016 • Tom Kuntzleman
Each year, I try out some experiments that connect to the annual National Chemistry Week (NCW) theme. The theme for NCW this year is “Forensics: Solving Mysteries through Chemistry: Focusing on the chemistry of fibers and forensics”. Based on this description, I decided to spend some time experimenting with dyeing fibers.