How Do Tupperware Products Resist Heat?

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According to the Green Guide, a website and magazine owned by the National Geographic Society, the safest plastics for repeated use in storing food are made from high density polyethylene (HDPE), low-density polyethylene (LDPE) and polypropylene (PP). These products are made to resist hot temperatures and preserve food. Most Tupperware products are made of LDPE or PP and are hence considered safe for repeated use for storing hot food items.