On 18:59 22 May 2021, charles said:

In article ,
Pamela wrote:
Amazon/Morrison's deliver frozen food with ice packs containing
some fluid which doesn't stay frozen in my freezer.

What liquid are they using and do ice packs have any use once the
frozen food has been delivered? Seems a shame to throw them away.

It is probably "Dry Ice". Frozen Carbon Dioxide. Your freeze°r
would need to beta -78°C to keep it frozen ;-)

It's not dry ice. When the ice pack drops to domestic freezer
temperature, the content becomes a slightly viscous fluid.

It's a translucent pouch.