Washing soda, sodium carbonate, is an alkaline with a pH of 11, and while it doesn't give off harmful fumes, you do need to wear gloves. It is found in the laundry section of most supermarkets. Arm & Hammer is one example.
Steps
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Check the cleaning supply section of your local supermarket.
- Visit a swimming pool supply store.
- Search for Sodium Carbonate on an auction site.
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Sodium Carbonate is also used as a dye fixative known as soda ash.
Warnings
- Sodium Carbonate can damage the skin, always wear gloves while handling.
