I have some sauces held in squeeze bottles: Low Density Polyethylene (LDPE), recycling code 4, dishwasher safe.

I want to stand them in hot water. Is it safe all the way to boiling point or does LDPE start to deteriorate at a lower temperature?



1 Answer 1


Britannica says LDPE is OK to 110°C but that would leave it pretty close to collapse if it were allowed to touch the pan itself with a burner underneath.

I'd also consider how floppy it might be at 95° or so.

I'd perhaps think of another method.

  • Thanks. I tested 70C last night with heat source off it it stood pretty well. I'll push it a bit higher today...
    – Moscoffier
    Jul 7, 2021 at 6:35

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