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All 2 posts Subject: Shelf Life Formic / H202 Please login to post Down

britanz
(Stranger)
11-03-04 22:36
No 539513
      Shelf Life Formic / H202

Swim is a benzo bee, but due to the musings of ocoteacymbarum and Chromic's HCL take on the pinacol he wants to play with the performic again.
He has some formic in the Amber glass bottles that is nearly 3 years old and some h202 in the black plastic hdpe container that is the same age, will these still be effective?

methyl_ethyl
(Guardian)
11-04-04 04:10
No 539584
User Picture       at the very least titrate the H2O2

Perform an iodometric titration on the H₂O₂, UTFSE for the procedure regarding that, I think I might have even been the one to post it, if not I am sure Rhodi has it on his site, or it can be found somehere on the hive if not pm me.

Formic Acid 80%+ in my experience has always been supplied in HDPE with vented caps, and not glass. Again UTFSE for Formic Acid, Glass, and it burning someones house/barn down.

I with out a doubt would not perform the reaction without at least calculating how much H₂O₂ by titration. I once had a failure due to very old H₂O₂. Even though it may proclaim that it is a stabilized solution, the stability of the solution is not expected to be stable over the course of three years. Especially if it has not been stored at 2-8C

regards,

m_e

   Unipolar Mania, It's good for life... laugh

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	All 2 posts		Subject: Shelf Life Formic / H202		Please login to post		Down


		britanz (Stranger) 11-03-04 22:36 No 539513				Shelf Life Formic / H202
						Swim is a benzo bee, but due to the musings of ocoteacymbarum and Chromic's HCL take on the pinacol he wants to play with the performic again. He has some formic in the Amber glass bottles that is nearly 3 years old and some h202 in the black plastic hdpe container that is the same age, will these still be effective?



		methyl_ethyl (Guardian) 11-04-04 04:10 No 539584				at the very least titrate the H2O2
						Perform an iodometric titration on the H₂O₂, UTFSE for the procedure regarding that, I think I might have even been the one to post it, if not I am sure Rhodi has it on his site, or it can be found somehere on the hive if not pm me. Formic Acid 80%+ in my experience has always been supplied in HDPE with vented caps, and not glass. Again UTFSE for Formic Acid, Glass, and it burning someones house/barn down. I with out a doubt would not perform the reaction without at least calculating how much H₂O₂ by titration. I once had a failure due to very old H₂O₂. Even though it may proclaim that it is a stabilized solution, the stability of the solution is not expected to be stable over the course of three years. Especially if it has not been stored at 2-8C regards, m_e Unipolar Mania, It's good for life...

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