Filling Hot Liquids in Disposable Drinking Cups

This is a disposable drinking cup. It is too thin. It bents with a slight force. Made to hold water and other cold beverages. Single use and dispose afterwards. It is too thin, made of plastic and seems not suitable for hot liquids like coffee and tea.

squeezing the disposable plastic cup

Is it really not suitable for hot liquids? Think again. Look at the cup bottom. The code symbol number “5”. Code 5 means polypropylene, a polymer resistant to grease, oil and various chemicals. It has high melting point and can be filled with hot foods. Polypropylene is generally recommended for food use.

disposable cup bottom with pp seal

To test, I prepared enough boiling water and poured it immediately in this disposable cup. The rising water vapor can be seen on picture. No deformities was observed after the test.

hot water in disposable cup

Now, can we use this cup for hot coffee or tea. It can be if you can manage to hold the cup without getting burns. However, it can  really be used for variety of purposes like a cheap mold for making jelly, maja blanca and duldol.

Reuse if possible because it is a polypropylene. Wash it well and dry.


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One Comment

  • I find that if you put a little cold water in the cup first, boiling water can be addded and the cup doesnt get that soft feeling like when only hot water is put into it. Also if you do use with oil or grease in it, you need to use soap to clean and water to rinse out soap before you can use for human consumtoion again. But they can be used after oil/grease use as seed starter pots. No need to rinse out soap. use them over and over again.

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