U of S | Mailing List Archive | alt-photo-process-l | Re: Sodium Carbonate (was Seeking Information on 2 problems with Gumpr

Re: Sodium Carbonate (was Seeking Information on 2 problems with Gumprocess)



>  Meanwhile, though I haven't tried it for the purpose, I have several boxes
> of Arm & Hammer "pure baking soda" in the house, for "baking, cleaning &
> deodorizing." This is sodium BI-carbonate. I have no idea if it will do what
> the sodium carbonate does in a cyano, but it deodorizes the fridge
> (allegedly, I haven't done a comparison test) and eases the digestive tract
> of persons afflicted (not my particular problem), and some folks with VERY
> white teeth use it for dentifrice, but above all it's useful in baking, such
> as sourmilk pancakes, et al. (Excellent if you have some spoiled milk, maple
> syrup & 20 minutes to spare..)

Sodium bicarbonate is not a chemical replacement for sodium carbonate,
but I have no idea what it will do in regards to cyanotype bleaching.
Arm & Hammer does make a Washing Soda that is sodium carbonate. If you
call the 1-800 on any of their boxes they can tell you the locations
in your zip code who stock the Washing Soda.