Citric Acid Supplier

Discussion in 'Alternative Processes' started by Johnindc, Jul 16, 2009.

  1. Johnindc

    Johnindc Member

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    My current citric acid supplier's price for 50lbs has increased from $85 to $ 125 in less than a year. Does anyone have any recommendations for chemical suppliers for the mid-Atlantic region?
     
  2. BradS

    BradS Member

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    Wow! How long does 50 pounds of citric acid last? I have a 1 pound jar in the fridge...that'll probably last the rest of my life.
     
  3. Mahler_one

    Mahler_one Member

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    Try Art Craft Chemicals in New York State. Mike is utterly honest, completely reliable, and will give you great advice.

    How come so much Citric Acid...just curious as to what you are making....that's alot of stop bath!!!

    Ed
     
  4. Kirk Keyes

    Kirk Keyes Member

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    Or a lot of artifical lemonade. Or mozzarella cheese.
     
  5. photomc

    photomc Member

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    Check with a brew shop or some place that has all the supplies for canning food. It is pretty common and prices will vary all over the place.

    On the other hand if you are using it as a stop bath, just use water and then into the fix. Haven't used a stop bath for film in a couple of years now, no issues from it - your mileage may vary.
     
  6. ann

    ann Subscriber

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    i bought some a year or so on ebay from a shop that sells supplies for soap making, very cheap. i am sorry i don't remember the name, but it shouldn't be hard to find something similar.
     
  7. Johnindc

    Johnindc Member

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    I'm using the citric acid to make sodium citrate developer. 50 lbs can get used up faster than you think.
     
  8. Colin Graham

    Colin Graham Member

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    I've been getting it from Chemistry Store, but the price has gone up there too. Still, it's quite a bit cheaper than the small quantities from the photochem places. But sodium citrate itself is still only ~$100 for 50lbs.

    I'm curious, is this for kallitypes? I only use about 10-20g/l of citric acid in a 20% solution of sodium citrate, mainly as a ph tweak.
     
  9. Johnindc

    Johnindc Member

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    Yes, it is for kallitypes. I think I will just buy the sodium citrate rather than mix my own.
     
  10. phritz phantom

    phritz phantom Member

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    do you use the citric in a sodium citrate solution (as a preservative, most likely...) or do you use the citric to produce sodium citrate?
    if it's the latter, would you explain, how this works? i am very interested.
     
  11. Johnindc

    Johnindc Member

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    150 gms of citric acid plus 120 gms of sodium carbonate in 1 liter of water makes a 20% sodium citrate solution.

    Dissolve the the citric acid first in a large container (I use 130-140 degree water) than slowly add the sodium carbonate. It will produce a lot of CO2.
     
  12. phritz phantom

    phritz phantom Member

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    ah! perfect!
    one item less on the shopping list! (after i've used up the pound i still have)
    thanks.

    edit: is the carbonate monohyd. or anhydrous?
     
  13. Johnindc

    Johnindc Member

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    Anhydrous.
     
  14. Kirk Keyes

    Kirk Keyes Member

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    It will not mater for this purpose if you use anhydrous or not.
     
  15. tim_bessell

    tim_bessell Member

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    Ah yes, home made sodium citrate!

    Just a thought... you may be unsatisfied with the results of the off the shelf store bought sodium citrate. Be prepared to do some fiddling to match what you got with your home brew.

    I made my own sodium acetate kallitype developer by reacting 5% distilled vinegar with baking soda. Then decided I could better spend my time taking photographs and bought sodium acetate from a supplier. Big difference in image tone. Might brew a gallon of my own again soon.