Bicarb Soda

Bicarb Soda is sodium bicarbonate (NaHCO₃), also known as Baking Soda or Bicarbonate of Soda. It is a simple mineral salt that forms a mildly alkaline solution of around pH 8.3.

That mild chemistry is exactly what makes it useful.

Bicarb can help neutralise many of the acidic compounds responsible for sour household odours, while its fine crystals provide gentle physical scrubbing to help lift stuck-on residue and light grime.

It also acts as a buffer, resisting large changes in pH when used in cleaning recipes.

Compared with Washing Soda and Borax, Bicarb is deliberately gentle. It is not the ingredient for heavy grease or deep cleaning. It is the one you reach for when stronger chemistry simply isn't necessary.

✅ Suitable for

• Ceramic and porcelain
• Stainless steel
• Grout and tiles
• Many washable hard surfaces
• Deodorising carpets and suitable fabrics
• Many everyday household cleaning jobs

❎ Use care on

• Aluminium
• Waxed or polished finishes
• Delicate fabrics and materials

❌ Bicarb + vinegar

Both are useful ingredients, but don't routinely mix Bicarb with vinegar or Citric Acid for cleaning.

The impressive fizz is carbon dioxide being released as the acid and Bicarb react with each other. In the process, much of the useful acidity and alkalinity is neutralised.

There are specific recipes where we deliberately use that reaction for the fizz, but for most cleaning jobs they are far more useful used separately.

🫙 Storage
Keep sealed in a cool, dry place. Moisture can cause Bicarb to cake and clump.

⚠️ Safety
Sodium bicarbonate itself is a low-hazard compound widely used in food and personal-care products. As Under Your Sink is not a food grade premise, this is supplied for cleaning and DIY use only and does not recommend it for consumption.