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When sodium bicarbonate -- or baking soda, as it's more commonly known -- stains glass, it leaves a white residue. The residue may be cloudy, grainy or streaky, but it makes the glass appear dirty even if it's otherwise clean. Baking soda residue can be removed using equally common household materials.
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Fill a bowl with one cup of water. Add 1/2 cup of white vinegar to form a cleaning solution for the glass. Baking soda is basic and reacts to an acid like vinegar, and the water dilutes the solution to protect your hands in case you have cuts or sensitive skin.
Wet a cloth in the cleaning solution. Wring it out and use it to wipe the baking soda from the glass. Don't be alarmed if you see foam; this is a result of the reaction between the baking soda and vinegar.
Rinse the glass completely with water. Repeat the process if any baking soda remains.
Using the vinegar without water added will make a stronger cleaner, which can help you clean the glass faster if the baking soda stain is thick. Wear rubber gloves to protect your hands if you have cuts, scrapes or sensitive skin.