'Dyeing cloth' experiment from the 'Chemistry of dyes' set
Channel: MEL Chemistry
Date: 2018-06-07

Do this amazing experiment at home with MEL Science: https://melscience.com/en/experiments/dyeing-cloth/

Safety
• Put on protective gloves and eyewear.
• Conduct the experiment on the plastic tray.
• Observe safety precautions when working with boiling water.

Step-by-step instructions
1. Use the red clothes pin to clip 2 pieces of fabric—polyester and wool. Do the same with the blue pin.
2. Fix the samples in 2 disposable cups.
3. Add 5 drops of liquid soap and 15 drops of 4% eosin solution into the cup with the red pin.
4. Add 5 drops of liquid soap and 15 drops of 1% carmine solution into the cup with the blue pin.
5. Fill the cups with boiling water to cover the pieces of fabric. Wait 10 min.
6. Thoroughly wash the fabric samples with water.
7. Compare results: eosin only colors wool fabric, and carmine easily washes off of both fabric samples.

Disposal
• Dispose of solid waste together with household garbage.
• Pour solutions down the sink. Wash with an excess of water.