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
     
    david, Mar 15, 2005
    #1
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  2. Try these people

    http://www.rayco-chemicals.co.uk/

    They used to have a wide ranging list - haven't used them recently.
     
    Malcolm Stewart, Mar 15, 2005
    #2
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  3. david

    Mark Dunn Guest

    Or Silverprint.
     
    Mark Dunn, Mar 15, 2005
    #3
  4. Indeed: www.silverprint.co.uk

    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
    #4
  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
    #5
  6. Seconded.
     
    Roger Whitehead, Mar 17, 2005
    #6
  7. david

    Mark Dunn Guest

    Cations are pussytive. Seriously, that's how you remember.
     
    Mark Dunn, Mar 17, 2005
    #7
  8. Sorry, brain fart - it's over 20 years since I was a practising chemist,
    and it was bedtime!

    David
     
    David Littlewood, Mar 17, 2005
    #8
  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
    #9
  10. Did you ever practise in daylight?
     
    Roger Whitehead, Mar 17, 2005
    #10
  11. Well, there was quite a bit of midnight oil involved finishing off my
    DPhil work!
     
    David Littlewood, Mar 17, 2005
    #11
  12. I'll take that as a 'no', then. :cool:
     
    Roger Whitehead, Mar 18, 2005
    #12
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