What Is Bicarbonate of Soda?
Bicarbonate of soda is the common name used mainly in the United Kingdom, Australia, and parts of Europe for a white crystalline powder known chemically as sodium bicarbonate. Its chemical formula is NaHCO₃, and it is a mild alkaline compound.
It has been used for centuries in cooking, cleaning, deodorizing, and medicinal remedies. When mixed with an acid and moisture, bicarbonate of soda releases carbon dioxide gas, which makes dough rise.
What Is Baking Soda?
Baking soda is the name used primarily in the United States and Canada for the exact same substance: sodium bicarbonate. Despite the different name, there is no chemical or functional difference between baking soda and bicarbonate of soda.
The term “baking soda” comes from its most popular use—baking and cooking—where it acts as a leavening agent.
Are They Chemically and Functionally the Same?
Yes—bicarbonate of soda and baking soda are 100% the same chemical compound. Both are:
- Sodium bicarbonate (NaHCO₃)
- White, odorless powders
- Activated by acids and heat
- Used for identical purposes
There is no difference in strength, purity, or effectiveness when substituting one for the other in recipes or household uses.
Why Do They Have Different Names?
The difference in naming is purely regional:
| Region | Common Name |
|---|---|
| UK, Australia, New Zealand | Bicarbonate of soda |
| USA, Canada | Baking soda |
| Scientific/Chemical | Sodium bicarbonate |
This often causes confusion, especially when following international recipes, but rest assured—they are interchangeable.
Common Uses of Baking Soda / Bicarbonate of Soda
Because they are the same product, both are used in:
Cooking & Baking
- Cakes, cookies, and bread
- Reacts with acids like lemon juice or vinegar
- Creates air bubbles for light, fluffy textures
Cleaning & Household
- Natural deodorizer
- Sink and drain cleaner
- Surface scrub
Health & Personal Care
- Antacid for heartburn
- Tooth cleaning (in moderation)
- Odor control
Bicarbonate of Soda vs Baking Powder: Important Difference
While bicarbonate of soda and baking soda are the same, they are not the same as baking powder.
Baking powder contains:
- Sodium bicarbonate
- Acid (cream of tartar)
- A drying agent (cornstarch)
This means baking powder is self-activating, while baking soda requires an added acid to work properly.
Conclusion
Yes, bicarbonate of soda and baking soda are exactly the same thing. They are simply different regional names for sodium bicarbonate, with identical properties and uses.
Whether you’re baking a cake, cleaning your home, or following a health remedy, you can confidently use bicarbonate of soda or baking soda interchangeably, depending on what your local store labels it.
