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Posted by Rick on June 21, 2004 at 13:15:11:
In Reply to: Catalyzed Sodium Sulfite posted by Joubert on June 11, 2004 at 19:15:54:
: Please, I'd like to formulate a catalized sodium sulfite, used as oxygen scavenger for low pressure boilers (10 bar). Does anyone know the proportion (in mass) of cobalt sulfate and sodium sulfite that might be mixed? Does it have to be crushed in a mill ? Is there another catalyst (FDA approved) for this purpose? Thanks in advance
Years ago we use to mix 4ml of cobaltous chloride to 100 grams of sodium sulfite. Then we started buying the powdered sulfite with the cobaltous sulfate catalyst already in it. Looking at the MSDS sheets for Univar the sodium sulfite is 60-100 and the sodium sulfate (catalyst?) is 1-5 in the Percentage (W/W) column. For GE Water technologies in the Range (w/w%) column it lists sodium sulfite at 60-100 and Cobaltous sulfate at 0.1-1.0.
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