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baking soda to washing soda


baking soda to washing soda

Postby Toni » Thu Dec 19, 2013 10:35 pm

long story short I want to make a solution to prepare fabric for printing.
one of the ingredients is washing soda. I can probably get it in woolies, will check it out.
anyhow, I found a page that says to convert baking soda to washing soda, you heat it in a 400 deg oven until it becomes grainy
she says "The difference between baking soda and washing soda is water and carbon dioxide. Seriously. Baking soda's chemical makeup is NaHCO3 (1 sodium, 1 hydrogen, one carbon, and 3 oxygen molecules). Washing soda's chemical makeup is Na2CO3 (2 sodium, 1 carbon, and 3 oxygen molecules). When baking soda is heated up to high temperatures, it breaks down to become washing soda, water steam, and carbon dioxide.".

is this true?
just had a thought...do I need carbon dioxide in my oven?

also where would I find alum?

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