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formic / safety acid

Discussion in 'Tanning' started by HAZMAT, Jan 19, 2018.

  1. HAZMAT

    HAZMAT Member

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    Got a question. Can formic and safety acid be mixed. I was mixing a pickle with formic and don't have enough. I have enough safety acid to add to it. Just wondering if it would work and safe. I don't won't to waste anything
     
  2. TIMBUCK

    TIMBUCK Active Member

    Yes it is perfectly fine.. Done it..
     

  3. George

    George The older I get, the better I was.

    My question is,why not just add water. The pH of formic acid is 2 while Safety Acid has a 1. That being the case, adding a less acidic acid to an existing one simply dilutes the mixture. I doubt there'd be any problems as such but Mr. Wizard kits can prove to be quite expensive.
     
  4. Bruce_Rittel

    Bruce_Rittel Consultant Services

    Go to your local Grocery Store and buy some cheap White Vinegar (it's an Acid) and add it to your Formic Acid solution mix. Get 2 or 3 Gallons of it. If anything it will bring your mixture down to at least a 2.5 pH (used by itself for a Pickle) - and protect your pickled skins. It contains Acetic Acid. Adding the Safety Acid, if you have already ordered it - will work but again at the higher price for it, you will have add quite a bit - the White Vinegar is cheap but you still might have to add quite a bit to your Formic Acid Solution already mixed to reach the required pH of your Pickle. A 2.0 pH or less.
     
  5. cyclone

    cyclone Posts: 400001

    Yes, you can safely add safety acid to a formic acid pickle to lower the pH.

    George, you have to check your chemistry on this one. Formic acid is classified as a weak acid by scientific standards. It has several protons to donate to solution but is unwilling to give up the second one easily. Safety acid, on the other hand, forms a relatively stronger acid when added to water. It gives up protons more readily so it'll drop the pH below that of safety acid. Just a little safety acid will bring the pH down just fine.
     
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