Sodium Citrate crystal vs powder form

Discussion in 'Alternative Processes' started by Andrew O'Neill, Jul 30, 2014.

  1. Andrew O'Neill

    Andrew O'Neill Subscriber

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    I've used the crystalline form of sodium citrate for developing kallitypes. I also have about 5kg of powdered sodium citrate, which I have started to use. I mixed it up just as I did the crystalline form (200g/litre). In the words of George Costanza, "was that wrong? should I not have done that?"
    Do I need to adjust the amount? Thanks in advance!

    Andrew
     
  2. Loris Medici

    Loris Medici Member

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    I don't think you need to adjust the amount if you don't see any *immediate* adverse effect. If you absolutely need the same solution strength, then you have to know which forms of sodium citrate you were using before, and you are using right now. Sodium citrate has many forms and hydration states... If you had provided this information, calculating the equivalent amount would have been very easy. (Most probably all are the tri-sodium citrate form - but at which hydration states?)

    P.S. Most probably your current solution strength is slightly greater than the solution strength you were using with the crystalline form... Therefore, I think there's nothing to worry about.
     
  3. Andrew O'Neill

    Andrew O'Neill Subscriber

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    Have no clue what form previous batch was, nor this current batch. All I know is previous batch was granular, and current is powder. No worries, though. It works. Thanks!