No, Faith.
Baking soda (US) is bicarbonate of soda, or sodium bicarbonate.

Washing soda is sodium carbonate, a step or two away from bicarb.  It got a 
mention in the text on the pages whose links I posted.  There was a 
description on one of the sites, I think the steam engine one, saying what 
the process was to make the sodium bicarbonate.  The paragraph on my 
previous post said: Washing soda is a mixture of mostly sodium carbonate 
decahydrate with some sodium sesquicarbonate and sodium bicarbonate in it. 
For a more mundane explanation, unless you understand the technical jargon 
on the websites,  you might need to enquire at your local shopping centre, 
though I think someone said washing soda was getting hard to find.

It's a white powder, or in crystal form, that people use to soften water.

If you google washing soda IMAGES you will see some packages that may ring a 
bell with you.  Or not, if you are not over 55 and female.

R

I've never heard of  'washing soda'.  Do yuo mean baking soda?  Faith G. 



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