Learn how to make washing soda for your homemade cleaning recipes. Hint: it’s easier than you think!
But what exactly is washing soda? Where you can find it? And what can you do if you can’t find it in stores (or online)? Let’s find out.
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What is washing soda?
Before I answer that question, it’s important to clarify what washing soda is not.
Washing soda is not the same as baking soda. They are two different compounds and are used for completely different purposes.
Washing soda, aka sodium carbonate (or soda ash), is a natural cleaner and a powerful water softener. It’s very basic with a pH of 11. The Environmental Working Group gives it an “A” on their scale, so it passes with flying colors, making it safe and non-toxic.
However, it’s very caustic and not edible. Make sure to wear gloves if you’ll be touching it with your hands, and try not to inhale the tiny particle dust that might fly up if you stir it too fast.
Where can you buy washing soda?
Here are a few places to look for washing soda before you decide if you need to make it at home.
Grocery or big box stores
It’s usually in the laundry aisle next to all the laundry boosters.
Pool cleaner aisle
The brand name is AquaChem. Just make sure the only ingredient listed is sodium carbonate!
What if you can’t find washing soda in stores or online?
For those who live in rural areas, or without large grocery stores, washing soda can be hard to track down.
So in my search for the best place to buy washing soda for one of my readers, I stumbled upon this idea from Penny at Penniless Parenting that you can actually turn baking soda into washing soda – simply by baking it!
As Penny explains,
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, 1 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.
So, the steam and carbon dioxide are released during the cooking process, leaving you with… washing soda! See? Now, don’t we sound all smart and science-y? 🙂
How to Make Washing Soda
The process is really simple. Just heat your oven to 400 F (or 200 C), sprinkle some baking soda on a shallow pan, and bake it for about half hour, until it changes composition. You should also stir it up occasionally, just so that it bakes more evenly.
That part takes a little more work; just a closer, watchful eye. Once you know the differences between the 2 sodas, you’ll be able to tell in no time.
Baking soda is powdery, crystallized, and clumps together.
Washing soda is more grainy, dull, and it doesn’t clump as easily.
You can see the difference below: baking soda on the left, and washing soda on the right. See how the baking soda likes to clump together, and the washing soda is more flat and spread out?
Now you can go make these non-toxic household cleaners without worrying about where to score your next box of washing soda:
And a word of caution:
Washing soda should be handled with care, as it is very caustic. Always wear gloves if handling it directly, and never inhale the dust particles directly.
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