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D-76 and Boric Anhydride.



 
 
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  #1  
Old December 27th 04, 06:13 PM
Keith Tapscott
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Default D-76 and Boric Anhydride.

Thanks to the Analyst for replying to my question of Boric Anhydride in
D-76. However, if Kodak state that a certain chemical component is included
in a specific processing product in their MSDS then I have no reason to
doubt their word, after all why should such a reputable company deliberately
mislead their customers?
To go back to my original question, I was asking what the function of Boric
Acid has in D-76 and how does it differ from Boric Acid?
Now here is another question, if you think that the commercially packaged
Kodak developer is the D-76d formula, then why does the Kodak product
contain close to 110 grams of constituents per litre instead of 123 grams
that are in the D-76d formula?
Kodak are hardly going to reveal a company secret and I certainly don't
expect them to. I was simply asking about the function of Boric Anhydride in
Kodak D-76 and how does it differ to Boric Acid?
Does anybody out there actually know the answer besides a Kodak chemist?


  #2  
Old December 28th 04, 04:42 AM
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the analyst wrote:

*Does anybody out there actually know the answer besides a Kodak

chemist?
Any chemist understanding inorganic chemistry.
Ilford, Agfa, and many other independent manufacturers.

*

But anyone who repeatedly mispells "borax" probably isn't a chemist.

  #3  
Old December 28th 04, 01:45 PM
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Keith Tapscott wrote:

To go back to my original question, I was asking what the function of

Boric
Acid has in D-76 and how does it differ from Boric Acid?


Borate in one form or another is used in B&W developers to buffer pH
between 8.5 and 10.

  #4  
Old December 29th 04, 03:54 AM
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None of this matters. Kodak produces a consumer version of D-76 which
is better than the original formula rom the standpoint of consistency
and reliability. That's all you have to know.

 




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