Is baking soda hydrogen peroxide?

Is Baking Soda the Same as Hydrogen Peroxide?

No, baking soda and hydrogen peroxide are not the same—far from it. Though both are common household items often found under the sink or tucked away in the medicine cabinet, they’re chemically very different.

Baking soda, or sodium bicarbonate, is a base—a mild alkali that reacts with acids to produce carbon dioxide. That’s why it’s a go-to in baking and cleaning. You’ve probably used it to deodorize the fridge, scrub sinks, or even soothe heartburn. It’s stable, safe in small amounts, and has been a kitchen staple for generations.

On the other hand, hydrogen peroxide is a weak acid, often sold as a 3% solution in pharmacies. It bubbles when applied to a cut because it reacts with enzymes in blood and bacteria, releasing oxygen. This makes it a useful antiseptic. It’s also used as a disinfectant and even a bleaching agent for hair or teeth. But unlike baking powder, it’s reactive and breaks down over time, especially when exposed to light.

While they’re often mentioned together—especially in DIY cleaning or oral health hacks (like whitening toothpaste made at home)—they serve entirely different roles. In fact, some people mix small amounts of both for cleaning because the reaction produces a mild foaming action that helps lift grime. But that doesn’t mean they’re interchangeable.

So, no—baking soda isn’t hydrogen peroxide. One’s a base, the other an acid. One helps bread rise, the other helps cuts heal. They may share shelf space, but their chemistry and uses are worlds apart.