Chemistry suppliers

Discussion in 'UK Photography' started by david, Mar 15, 2005.

  1. david

    david Guest

    I'm interested in having a go at cyanotypes, and I need these chemicals...

    green ferric ammonium citrate

    potassium ferricyanide

    Anyone know where in the UK I might get them?
    I have not searched any where else yet.

    david, Mar 15, 2005
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  2. Try these people

    They used to have a wide ranging list - haven't used them recently.
    Malcolm Stewart, Mar 15, 2005
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  3. david

    Mark Dunn Guest

    Or Silverprint.
    Mark Dunn, Mar 15, 2005
  4. Indeed:

    ammonium ferric citrate* 100g £8.59
    potassium ferricyanide** 100g £3.09

    * The correct naming rule is to put anions in alphabetical order - that
    is where you will find it in the catalogue.
    ** Proper name is potassium hexacyanoferrate(III), but everyone uses the
    old name.
    David Littlewood, Mar 17, 2005
  5. david

    Mike Scott Guest

    David Littlewood wrote:
    NH4+ and Fe+++ are surely cations, not anions. They are named for the
    electrode to which they are attracted in electrolysis.
    Mike Scott, Mar 17, 2005
  6. Seconded.
    Roger Whitehead, Mar 17, 2005
  7. david

    Mark Dunn Guest

    Cations are pussytive. Seriously, that's how you remember.
    Mark Dunn, Mar 17, 2005
  8. Sorry, brain fart - it's over 20 years since I was a practising chemist,
    and it was bedtime!

    David Littlewood, Mar 17, 2005
  9. david

    Mike Scott Guest

    Well it's over 30 years since I last mixed up any chemicals - so no
    excuses please :)
    Mike Scott, Mar 17, 2005
  10. Did you ever practise in daylight?
    Roger Whitehead, Mar 17, 2005
  11. Well, there was quite a bit of midnight oil involved finishing off my
    DPhil work!
    David Littlewood, Mar 17, 2005
  12. I'll take that as a 'no', then. :cool:
    Roger Whitehead, Mar 18, 2005
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