Baking soda, borax and washing soda may look similar, but they do not have the same strength or purpose. The major difference is their pH—the measurement used to describe how acidic or alkaline a water-based solution is.
The pH scale runs from 0 to 14:
- Below 7 is acidic.
- 7 is neutral.
- Above 7 is alkaline or basic.
As alkalinity increases, a cleaner generally becomes more effective at breaking down grease, oils and certain types of organic soil. However, stronger does not automatically mean better. Highly alkaline products can irritate skin and damage sensitive surfaces when used incorrectly.
The stated pH values are approximate because the actual measurement depends on the product, concentration, water and temperature. The EPA provides a general explanation of the 0–14 pH scale.
Baking soda: a gentle everyday cleaner
Approximate pH: 8.3
Classification: Mildly alkaline
Baking soda, or sodium bicarbonate, is the mildest of the three products. A freshly prepared 0.1-molar solution has a pH of approximately 8.3, according to the National Library of Medicine’s PubChem database.
Its mild alkalinity and fine texture make it useful for:
- Absorbing and neutralizing odors
- Gently scrubbing durable surfaces
- Loosening light grease and food residue
- Cleaning some sinks, cookware and appliances
- Freshening washable fabrics and containers
Baking soda is useful when light cleaning and gentle abrasion are needed. However, its particles can still scratch polished, glossy or delicate finishes. Always test it in an inconspicuous area first.
Borax: a laundry booster and water conditioner
Approximate pH: 9.2–9.5
Classification: Alkaline
Borax is a sodium borate compound traditionally used in laundry and household-cleaning products. It is more alkaline than baking soda but less alkaline than washing soda.
Borax can help:
- Boost the performance of laundry detergent
- Soften hard water by reducing interference from certain minerals
- Loosen some soils and stains
- Control odors in washable items
- Improve cleaning conditions in the wash water
Borax should not be confused with baking soda, and it should never be treated as a food-safe ingredient. Keep the powder away from children and pets, avoid creating airborne dust, and follow the manufacturer’s label. The CDC’s Agency for Toxic Substances and Disease Registry notes that borax is used in products including laundry detergents and household cleaners.
Washing soda: stronger grease-cutting power
Approximate pH: 11–11.5
Classification: Strongly alkaline
Washing soda is sodium carbonate. It is considerably more alkaline than baking soda and is designed for heavier cleaning. PubChem reports a pH of approximately 11.37 for a 1% sodium carbonate solution and higher measurements at stronger concentrations. See the sodium carbonate chemical profile.
Washing soda can help:
- Break down heavy grease
- Boost laundry-cleaning performance
- Soften wash water
- Remove stubborn residue and buildup
- Prepare certain durable surfaces for deeper cleaning
Because it is strongly alkaline, washing soda requires more care. Wear gloves, avoid breathing the powder and prevent contact with the eyes. It may damage or discolor aluminum, waxed surfaces, some painted finishes, fiberglass, delicate fabrics and certain sealed materials.
Do not assume that washing soda is appropriate simply because a surface is dirty. The surface material must be identified first.
Does a higher pH always clean better?
No. A higher pH can provide stronger grease-cutting action, but the correct product depends on the soil and the surface.
| Product | Approximate pH | Relative strength | Typical purpose |
|---|---|---|---|
| Baking soda | 8.3 | Mild | Deodorizing and gentle scrubbing |
| Borax | 9.2–9.5 | Moderate | Laundry boosting and water conditioning |
| Washing soda | 11–11.5 | Strong | Heavy grease and stubborn buildup |
Using a product that is unnecessarily strong can create avoidable risks without producing a better result. Professional cleaning involves matching the chemistry, concentration, tools and contact time to the specific job.
Cleaning is not the same as disinfecting
Baking soda, borax and washing soda may help remove soil, grease and odors, but their alkalinity alone does not make them registered disinfectants.
The EPA distinguishes these processes:
- Cleaning removes dirt and organic matter.
- Sanitizing reduces bacteria according to a tested product claim.
- Disinfecting kills bacteria and viruses according to the product’s registered label.
When disinfection is required, use an appropriate EPA-registered disinfectant and follow its directions, including dilution, surface compatibility and wet contact time. Learn more from the EPA’s explanation of cleaning, sanitizing and disinfecting.
Essential safety rules
- Read and follow the product label.
- Wear gloves when handling washing soda.
- Avoid inhaling powders and work in a ventilated area.
- Keep all products away from children and pets.
- Never ingest borax or products sold for cleaning.
- Do not combine cleaners unless their labels specifically permit it.
- Never mix an unfamiliar cleaner with chlorine bleach.
- Test the solution on a small, hidden section first.
- Rinse food-contact surfaces when required.
- Store products in their original labeled containers.
Ruthimaid’s approach to cleaning chemistry
At Ruthimaid, we believe professional cleaning requires more than choosing the strongest chemical available. It requires understanding the soil, identifying the surface, selecting an appropriate product and using the correct procedure.
Our teams follow a deliberate process:
Identify → Select → Clean → Inspect → Correct → Verify
This approach helps protect surfaces while delivering consistent, measurable cleaning results for homes and commercial facilities.
For professional residential or commercial cleaning services, visit Ruthimaid.com.
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