Baking soda is a versatile home, garden and kitchen product that you hear mentioned in the same breath as bicarbonate of soda and baking soda. Although these terms are often used interchangeably, far from everyone knows the exact difference. Because confusion can lead to misuse, in this article we explain in detail what it is and how to use baking soda safely.
What is baking soda? – bicarbonate of soda, baking soda
Sodium hydrogen carbonate, better known as baking soda, is a white crystalline powder with the chemical formula NaHCO₃. The powder behaves like a mildly alkaline salt that reacts with any acid, releasing carbon dioxide (CO₂). This gas formation explains why the powder can serve as a raising agent in the kitchen.
(Reacts violently with acids such as lemon juice and vinegar. See also our article on alternatives to vinegar for limescale).
- Bicarbonate
- Bicarbonate of soda
- Sodium hydrogen carbonate
Brief history
Originally, baking soda was extracted from natural mineral deposits such as natron in Egypt. Later, due to the demand for a stable, pure stream, people switched to the Solvay process. In this process, sodium chloride reacts with ammonia and carbon dioxide. Because this industrial process takes place under strictly controlled conditions, the baking soda available today is chemically extremely pure.
Chemical properties in a nutshell
- Mildly basic: pH around 8.3 in solution.
- Reacts violently with acids such as lemon juice and vinegar.
- Decomposes above 50-60 °C partially to sodium carbonate, water and CO₂.
Bicarbonate versus baking soda – the difference explained
Although bicarbonate and baking soda designate the exact same chemical, there are three practical differences you may encounter in stores:
- Purity:
- Bicarbonate is typically offered as “food grade” in food contexts.
- Baking soda can be either food grade or technical grade; the latter variety sometimes contains micro impurities that are harmless when cleaned but undesirable when consumed.
- Grain size:
- Fine bicarbonate dissolves faster, ideal for dough preparations.
- Coarser baking soda granules work better as mild abrasive grit on surfaces.
- Marketing and packaging:
- Etiquettes: on food packaging, you often see E500, a European additive number for sodium bicarbonate.
- Technical packaging usually calls the product “sodium bicarbonate” or “soda bikarb” and does not list an E code.
Sometimes a jar will say “baking soda” without any further indication. Therefore, always check for “food grade” or E500 on the package if you want to use the product in dishes. Make no mistake: baking soda for a pool filter is chemically identical, but may contain traces of heavy metals and thus not suitable for eating.
Practical uses of baking soda – kitchen secret to garden trick
Because baking soda is multi-purpose, it pays to briefly discuss the most popular uses by domain.
In the kitchen
- Raising agent: mix ½ teaspoon baking soda with an acidic ingredient (e.g., buttermilk) for fluffy pancakes.
- Odor eliminator: an open container in the refrigerator absorbs volatile acids and prevents musty odors.
(Also read our blog on 5 causes and solutions for a smelly vacuum cleaner.) - Acid tempering: a pinch in tomato sauce neutralizes excess acids, making the sauce taste less pungent.
Cleaning
- Stain remover: make a paste of baking soda and water, rub it with a soft cloth over tea stains on cups.
(For more cleaning tips, discover how to remove glue residue from glass.) - Unclog drains: pour 100 g of bicarbonate of soda into the sink, add 100 ml of vinegar, fizz and rinse with hot water.
(See also our article on alternatives to vinegar against limescale). - Carpet deodorization: sprinkle a thin layer on the carpet, leave on for an hour and vacuum.
(Also check out our blog on mold removal on walls, with tips to keep your home fresh).
Personal care
- Natural deodorant: lightly dab armpits with some powder; the higher pH inhibits odor-forming bacteria.
- Toothpaste boost: one part baking soda to three parts toothpaste provides an extra mild abrasive effect.
Garden and animal care
- pH corrector: dissolve 1 tablespoon in 4 liters of water and pour around plants that like slightly alkaline soil.
- Dog spa: soak sensitive dog paws in lukewarm water with 1 teaspoon of bicarbonate for 5 minutes to soothe irritation.
Domestic medical use
- Antacids: dissolve up to ½ teaspoon in a glass of water; do not take more often than once every two hours and not with a low-sodium diet.
Safe use of baking soda – safe use, dosages and warnings
Although baking soda is in many households, sensible dosing remains essential.
General guidelines
- Pastry: ½ to 1 teaspoon per 250 g of flour in combination with acid.
- Cleaning: sprinkle lightly until a thin layer is visible; wipe away excess with a damp cloth.
- Personal care: test on a small area of skin first to rule out irritation.
Health risks
- Excessive intake: more than 5 g per day can lead to sodium overload, high blood pressure or alkalosis.
- Skin irritation: redness and dryness may occur in sensitive skin; rinse immediately with water.
- Contraindications: persons with heart or kidney problems should consult a physician before internal use.
Possible allergic reactions
- Redness, itching or rash.
- Severe: shortness of breath or swelling; seek medical attention immediately.
Storage Advice
- Store the powder airtight, dry and dark.
- Keep package out of reach of children to prevent accidental ingestion.
Choosing the right bicarbonate of soda or baking soda – food grade vs technical grade
Not every bag of sodium bicarbonate is the same. Still, you can use this checklist to quickly select the right product:
- Read the label:
- Does it say E500 or “food grade” on it? Then it is suitable for consumption.
- Is an E-code missing and you find phrases like “not for food use”? If so, use the product for cleaning only.
- Look at the grain size:
- Fine powder dissolves in dough and drinks.
- Coarse powder abrades better on stainless steel or baking trays.
- Determine your needs:
- Want to clean a patio en masse? Technical grade is cheaper in bulk.
- Are you an avid home baker? Consistently choose food grade quality.
- Check the origin:
- European-produced bicarbonate typically meets stricter quality controls.
- Imports from countries with less oversight can have varying degrees of purity.
FAQ on baking soda, bicarbonate of soda and baking soda – difference and safe use
- Question 1: Is baking soda the same as baking powder?Answer: No. Baking powder consists of baking soda, an acid (often tartar powder) and an anti-caking agent such as corn starch. Baking soda only reacts when you add the acid itself.
- Question 2: Can you eat baking soda?Answer: Only food grade baking soda (E500) is safe for consumption; technical grade you leave out for food.
- Question 3: What is the difference between baking soda and baking powder?Answer: Baking soda is pure sodium bicarbonate. Baking powder contains baking soda as well as a dry acid, so it is “complete” in itself.
- Question 4: How long does bicarbonate keep? Answer: Up to two years, provided you store it dry and airtight. Test old powder by adding a little vinegar: no effervescence is a sign of reduced activity.
- Question 5: Is inhalation of baking soda dust dangerous?Answer: Small amounts are usually harmless. Nevertheless, repeated or intense inhalation can cause irritation of the nose and lungs, similar to dust particles in a bakery.
(For more insights on odor problems in the household, check out our blog on 5 causes and solutions for a smelly vacuum cleaner).
Conclusion – safe use of baking soda, bicarbonate of soda and baking soda
In summary, baking soda, bicarbonate of soda and baking soda are chemically identical, but may differ from each other in packaging, purity and marketing. This makes it clear why you prefer to choose food grade for a soufflé and can use technical grade for polishing joints just fine. Still, safety remains crucial: pay attention to dosage, check labels and consult a doctor when in doubt about internal use.
Because of its wide applicability – from airy pastries to fresh armpits – this powder deserves a permanent place in every household. Still have questions or want to share your own experiences? Feel free to comment and let us know how you use baking soda. As always, use with common sense, and you’ll get the most out of this wonder drug.
