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  1. #1

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    Ferric ammonium EDTA source

    I am thinking of mixing my own Blix for Ra4 and was wondering if anyone
    can help with a supplier for Ferric Ammionium EDTA. I may have to import this
    but if there is a local supplier I would prefer to deal with them.
    Any help welcome.
    Best Regards Don

  2. #2
    Mike Wilde's Avatar
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    JD Photochem for Fe Amm EDTA

    Claire mails stuff all over the work from here in Canada. Hope you can find a local source though, because this is a 37% aqueous solution, as I recall.

    I don't think anyone would be down on you for using a commercial blix in a home brew process. I know there is the pride thing, but, balance that against the option of paying post on more than 60% of the jug being water, if you cannot find a domestic supplier.

  3. #3
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    The Photographers Formulary sells it as a liquid concentrate. Ferric Ammonium EDTA only comes as a liquid concentrate due to the problems inherent in making a stable solid.

    PE

  4. #4
    Mick Fagan's Avatar
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    Presumably you are in Australia, coz of where the post is.

    Have you tried Vanbar?

    Quite some time ago I was fiddling with a friend doing colour neg chemistry about the time RA4 was being introduced. I seem to remember using Ferric Sodium EDTA which was a yucky sick looking powder. It did the job.

    Vanbar on their Bulk chemistry site list various EDTA salts and acids.

    Better yet, telephone their North Melbourne branch on a Wednesday (I think) when their chemist is there and speak directly to a heavy European accented, photo chemist.

    Worth a try anyway.

    I've been starting to re-stock my B&W chemistry of late and Vanbar have been quite helpful. If you live in Melbourne or Sydney, you can pick up and eliminate courier or postal charges.

    Mick.

  5. #5
    Photo Engineer's Avatar
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    The Ferric Sodium EDTA is a sick brown powder. It can take up to 4x longer to bleach than the Ammonium salt, and takes forever if used in C-41.

    PE



 

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