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Formic Acid 99.5%

Discussion in 'Tanning' started by Guerra, Dec 4, 2010.

  1. Guerra

    Guerra New Member

    Besides it being very dangerous to handle, does a pickle solution made from Formic work well? Is it better than others or worse? Any input on this would be greatly appreciated.
  2. MHTaxidermy

    MHTaxidermy (307) 640-2602

    I use formic, and it works well for me. Some like it, some don't, you'll have to try it for yourself

  3. I would have to consider formic as the best & easiest pickling agent to use , it is not a " strong " acid and generally shouldnt burn a skin or cause sun bleaching if the skin is subjected to a bit of sun light .If sulphuric is used you can burn yourself , the skin and will a form of sulphur bleaching if the skin sees any large amount of sunlight (direct or indirect). Sulphur bleaching can also be a problem if the skins are tanned with aluminium sulphate. So in a nutshell if you can get formic whether it is 99% or 85 % use it , most pickle recipes call for 85% so if you use 99% just recalculate and check your ph. If using 85% you will probably need to add as much again over the first 3 days of the skin being in the pickle as what was needed to get the ph down in the first place.
    Cheers Peter
  4. Guerra

    Guerra New Member

    Thanks for the info. How do you guys monitor your pH? I only have 1-14 test strips. They dont register 0.5's. Will they be accurate enough?
  5. I cant see why they wouldnt be , you can also get 1-6 papers which is what I used for 3 years unti I got a meter.
  6. Rhino

    Rhino Too many irons in the fire will put the fire out!

    Where can you buy formic that pure? I have never seen past 90%.
  7. cyclone

    cyclone Posts: 400001

    That's reagent grade that we use in the lab OS...Expensive..
  8. Guerra

    Guerra New Member

    I work in a chemical plant wastewater lab. I also deal with haz waste disposal and shipping. Every 90 days I have to dispose of loads of samples of many different
    chemicals. We dilute tanktruck loads of Formic with DI water down to 95,90, and 85%. I run them through a Karl Fischer Titrater for blend accuracy. It's a waste to just lab pack and ship out for neutralization when it's so useful. Hey, recycle! Just not to the point of being a Tree Hugging Hippie!