Author Topic: KMnO4 shelflife  (Read 902 times)

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Vaaguh

  • Guest
KMnO4 shelflife
« on: June 25, 2004, 02:41:00 PM »
On the label from an old Merck KMnO4 can there is a shelflife date reading 31.10.01.

A quick test using a drop of motor oil with a little bit of the KMnO4 gave a small fire so the KMnO4 seems reactive.

Is there any non commercial reason why a shelf life like that is stated?


hest

  • Guest
nope
« Reply #1 on: June 25, 2004, 02:53:00 PM »
nope, it will last longer than you

Nicodem

  • Guest
Reasons in a consumer society?
« Reply #2 on: June 26, 2004, 09:40:00 AM »
Is there any non commercial reason why a shelf life like that is stated?

Yes, an excellent reason: They want you to buy a new package.


Chimitant

  • Guest
Container lifetime ?
« Reply #3 on: June 29, 2004, 11:45:00 PM »
I think the plastic conatiners they sell chemicals in donĀ“t have eternal life. Maybe that they may might degrade and become permeable to air ? On the other hand, I have a rather large collection of plastic containers filled with cehmicals and almost all are in perfect conditions despite their age (3-15 years old). Maybe Nicodem is right after all and is the only reason money (as always).