Re: Ferric Oxalate Solution?

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From: Sandy King (sanking@hubcap.clemson.edu)
Date: 12/27/00-09:59:51 PM Z

Joe,

I heated the solution, but violently in the microwave, maybe up to
170F in about a minute. Any way to know if this turned the ferric to
ferrous? Most of the oxalate, but not all, went into solution after
the above plus some agitation.

Sandy

>Sandy,
>
>You need to gently heat the solution to get the FO in solution. Not to much
>or you will turn the ferric to ferrous. The solution needs to be shaked,
>stired or general agitated off and on for a while. It will go into solution,
>it just takes time. Also, a small amount of oxalic acid will help the ferric
>go into solution. I have a laboratory magnetic stirrer and it takes about
>twenty minutes at room temperature.
>
>Joe Portale
>
>----- Original Message -----
>From: Sandy King <sanking@hubcap.clemson.edu>
>To: <alt-photo-process-l@sask.usask.ca>
>Sent: Wednesday, December 27, 2000 7:38 PM
>Subject: Ferric Oxalate Solution?
>
>
>> In anticipation of doing some experimentation with Kallitype I mixed
>> a Ferric Oxalate solution this evening, 100ml of water at room
>> temperature to 20g of Ferric Oxalate powder, 20%. A lot of the Ferric
>> Oxalate did not go into solutions. Is this normal? If not, what did I
>> do wrong?
>>
>> Sandy King
>>
>>
>>
>>

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