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Thread: gold chloride

  1. #21

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    What are people using Gold Chloride for?

    I was told by photographer Kim Weston, that if used about 2 drops of 1% solution in your coating for platinum prints...it will give a better black.

    What else can gold chloride be used for?

  2. #22
    David A. Goldfarb's Avatar
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    Quote Originally Posted by Ian Grant
    $13 per gm is actually very reasonable.

    I went from being a Photographic Chemist in 1986 to being a precious metal refiner and have 18 years experience of Gold refining, many kilos of fine gold per day :-)

    Your price of $13 is actually well below the norm for laboratory grade Gold Chloride.

    Ian
    Ann's original post is two years old. Would that I would have bought then.

    Most people are using gold chloride in toning formulas. Gold toning is standard procedure for albumen printing and is also recommended for Centennial POP.
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  3. #23

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    It makes a very nice toner as well!!
    Mike C

    Rambles

  4. #24
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    Gold chloride is use in sensitzing high speed silver halide emulsions in almost all films sold on the market today.

    PE

  5. #25
    David A. Goldfarb's Avatar
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    Cachet claimed that their Expo graded paper (same as Maco Expo, J&C Exposition Graded, Efke Emaks) had a relatively high gold chloride content.
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  6. #26
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    I'm surprised, as gold tends to soften toe in paper emulsions and lower contrast.

    Well, I guess it depends on what curve shape or effect you want as to what addenda you are free to use.

    Typically, gold is used in film to get long scales, and cadmium was used to get high contrast in papers. Cadmium is no longer used in most commercial papers, but some smaller photo companies still use it to make papers with sharp toe and high contrast.

    PE

  7. #27
    David A. Goldfarb's Avatar
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    Well, it's a nice looking paper.

    I've heard it said that gold chloride accounted for the high cost of Super-XX compared to other Kodak films. Any truth to that?
    flickr--http://www.flickr.com/photos/davidagoldfarb/
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  8. #28
    ann
    ann is online now

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    we use it for toning.

    And it is amazing how time flies, didn't realize how old this post was; i will be interested to see what folks come up as i might be interested in some more .

  9. #29
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    Quote Originally Posted by David A. Goldfarb
    Well, it's a nice looking paper.

    I've heard it said that gold chloride accounted for the high cost of Super-XX compared to other Kodak films. Any truth to that?

    No truth to that one whatsoever.

    Gold is used at such a low level it may be considered a trace element. However, at the amount used by EK making all of that film, it was a big expenditure in the budget nevertheless. It just was insignificant on a per roll basis. And, it still is.

    PE

  10. #30

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    Quote Originally Posted by ann
    Have been shopping for gold chloride.
    Is anyone aware of a price less than 13 dollars a gram?
    Gold alone is now over $15/gram; $470/troy ounce +/- .
    There are 31.1 grams/troy ounce. Dan

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