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Polymer clay

Clay

Sustainability:

Polymer clay is made of PVC resin powder, which is essentially a synthetic plastic that does not biodegrade. This makes it an unsustainable choice, and the phthalates found in the clay have been linked to endocrine disruption in wildlife. The clay also contributes to microplastics in the environment when it fragments.

Potential Chemical Exposure:

• Acute Inhalation Risk (Burning): Burning or severe over-baking triggers a rapid breakdown of PVC, releasing toxic hydrogen chloride gas. Breathing these fumes causes severe respiratory irritation, coughing, watery eyes, and headaches. If burning occurs, immediately turn off the oven, ventilate the space, and evacuate the room.
• Ingestion & Cross-Contamination: Polymer clay is not food-safe. Residual plasticizers can leach into consumables. Ingestion can cause stomach distress and choking hazards.
• Particulate Hazard: Sanding, drilling, or buffing cured polymer clay creates ultra-fine PVC plastic dust. Inhaling this dust can lead to microplastic accumulation in lung tissues.

Safe Handling Recommendations:

Always use an independent oven thermometer to prevent overheating; do not rely strictly on oven dials. Use dedicated crafting tools and a separate toaster oven rather than standard kitchen food-prep equipment. Wash hands thoroughly with soap and lukewarm water immediately after molding. Wear a properly fitted dust mask when sanding or grinding cured pieces

Eco-Friendly Alternatives:

Natural earth clays, plant based air dry clays, and salt dough are the best options for eco friendly clays to use instead.

Sources - DIY or Retail:

Other clay types can avoid exposure to plasticizers.

Additional Resources:

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