Substituiing Ammonium & Potassium dichromate

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From: Sandy King (sanking@hubcap.clemson.edu)
Date: 01/08/01-05:05:56 AM Z


I use the following conversion factor.

Substitue 117 parts of potassium dichromate for 100 parts of ammonium
dichromate.

Substitute 85 parts of ammonium dichromate for 100 parts of potassium
dichromate.

Sandy King

> Hi everybody,
>
>I wonna try now again the Gelabrom process (very
>closed to Carbro) but have only ammonium dichromate
>as I use it for carbon transfer.
>
>Can I use the ammonium dichromate for a potassium
>based formula and how should I alter the ammount
>(as ammonium dichromate should react more heavily
>as the potassium version does)?
>
>The original formula is:
>
>Potassium ferricyanide 4,0 g
>Potassium dicromate 3,0 g
>Potassium bromide 2,0 g
>Succinic acid 1,1 g
>Potassium alaun 0,5 g
>Distilled water 250 ml
>
>
>Thanks to the chemical experts on the list
>& best Regards!
>Stefan


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