Turning plastic gloves into hot sauce

Video Overview

Sponsored by Micro Center. Previous experiment: Turning plastic gloves into grape soda with a focus on chemical extraction. New experiment: Converting plastic gloves into hot sauce.

Conceptual Background

  • Goal: Extract DINP (diisononyl phthalate) from vinyl gloves to create a spicy molecule.

  • DINP: Used to enhance the softness and durability of vinyl gloves; chemically resembles compounds found in chili peppers that contribute spiciness.

  • Target Molecule: nordihydrocapsaicin is the desired compound for hot sauce.

Experiment Steps

Initial Preparation

  1. Choosing Gloves: Ensure the selection of vinyl gloves that contain DINP by checking product specifications or labels.

  2. Chop Gloves: Cut 20 vinyl gloves into smaller pieces (approximately 1 inch in size) for better surface area during extraction.

Extraction Process:

  1. Setup: Place the chopped gloves in a heat-resistant container suitable for a hot plate.

  2. Add Rubbing Alcohol: Pour enough rubbing alcohol over the chopped gloves to submerge them completely.

  3. Double Boiler: Place a bowl of cold water on top of the container with gloves and alcohol to create a double boiler effect. This helps maintain a controlled temperature and prevents the alcohol from boiling off too rapidly.

  4. Heat Mixture: Heat the hot plate, bringing the alcohol to a boil. Allow the gloves to boil for about 1 hour, stirring occasionally to ensure thorough extraction.

Extraction of DINP

  1. Filtration: After boiling, filter the mixture through a layer of cotton or a fine mesh to remove solid particles and collect the clear solution containing DINP.

Chemical Conversion Process

  1. Chemical Reaction: In a well-ventilated area, add sodium hydroxide (drain cleaner) carefully to the filtered clear solution of DINP. Stir the mixture continuously to facilitate the reaction that produces isononanol and sodium phthalate.

  2. Complete Reaction: Maintain the temperature to keep the reaction going for an additional 30-45 minutes, ensuring that all reactants are consumed.

Separation

  1. Separatory Funnel: Pour the reaction mixture into a separatory funnel. Allow the layers to separate; the bottom layer typically contains sodium phthalate, which can be collected for further non-spicy applications (like the grape project).

  2. Collect Yellow Liquid: Retain the yellow liquid on top for the hot sauce experiment, which contains isononanol.

Distillation of Isononanol

  1. Distillation Setup: Assemble a distillation apparatus with a flask and condenser. Pour the yellow liquid into the flask.

  2. Temperature Control: Heat gently to lead hot vapor from the flask into the condenser; cool the vapor so that it condenses back to liquid in a beaker. Monitor temperature closely to prevent overheating.

  3. Collect Product: Collect distilled liquid, aiming for around 800 mL, but be cautious of cloudiness which signals potential contamination with water.

  4. Separation: Separate any cloudy contamination from the thicker, orange isononanol layer remaining.

Cleaning Isononanol

  1. Further Distillation: If needed, distill the remaining isononanol further to obtain a purer product, confirming purity via boiling point (205 °C-208 °C). Aim for a final yield target of approximately 97 grams.

Key Challenges and Adjustments

  • Conversion Failure: The initial attempt to convert isononanol to isononanoic acid using potassium permanganate may not work as expected; keep thorough notes for troubleshooting.

  • Backup Option: Have Jones reagent on hand as an alternative method for conversion if initial steps do not yield desired results.

Conclusion

The experiment, despite challenges, involves intricate chemical processes aimed at extracting and utilizing components from vinyl gloves. The next step is to refine the approach in converting isononanol into the desired compound for hot sauce, ensuring to adjust procedures based on observations and outcomes throughout the process.