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Sodium Bicarbonate in Fire Extinguishers

Sodium Bicarbonate for Fire Extinguisher Powder

Sodium bicarbonate (NaHCO₃) is the main active ingredient in BC dry chemical fire extinguisher powder. It is used to fight Class B fires (flammable liquids such as gasoline, oil and grease) and fires involving energized electrical equipment, because the powder is non-conductive.

Pars Baking Soda Group supplies industrial grade sodium bicarbonate from its plants in Mashhad and Shiraz to fire extinguisher powder manufacturers and fire safety companies. It is available for bulk export to Russia, Central Asia, and neighboring markets.

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Sodium Bicarbonate in Fire Extinguishers

How Sodium Bicarbonate Puts Out Fires

Sodium bicarbonate dry chemical powder fights fire in several ways at once. Its main action is chemical: it interrupts the combustion reaction in the flame.

Interrupts the Chain Reaction

Fine powder particles release sodium species in the flame that break the free-radical chain reactions that keep a fire burning. This is the main reason BC powder knocks down liquid fires so quickly.

Thermal Decomposition

When heated, sodium bicarbonate breaks down into sodium carbonate, water and carbon dioxide (2NaHCO₃ → Na₂CO₃ + H₂O + CO₂). This reaction absorbs heat and helps cool the fire.

Smothering Effect

The released CO₂ and the powder cloud reduce the oxygen available at the flame surface and form a thin barrier over burning liquids.

Non-Conductive

The powder does not conduct electricity, so BC extinguishers can be used on fires involving energized electrical equipment, within the limits of the extinguisher's rating.

Which Fire Classes Is Sodium Bicarbonate Powder Used For?

Fire classes are named differently in the US (NFPA) and in Europe (EN 2). The table shows where BC powder is typically used.

Fire type	US class (NFPA)	EU class (EN 2)	Sodium bicarbonate (BC) powder
Ordinary solids: wood, paper, textiles	A	A	Not recommended. Use ABC powder.
Flammable liquids: gasoline, oil, solvents	B	B	Yes. Main use.
Flammable gases	(B)	C	Yes
Energized electrical equipment	C	(no separate class)	Yes, within the extinguisher's rating
Cooking oils and fats	K	F	Not the preferred agent. Use wet chemical extinguishers.

Always follow the rating and instructions on the extinguisher label and your local fire safety standards.

Sodium Bicarbonate vs. Monoammonium Phosphate (BC vs. ABC Powder)

	Sodium bicarbonate (BC)	Monoammonium phosphate (ABC)	Potassium bicarbonate (BC)
Fire classes	B, C	A, B, C	B, C
Strength	Fast knockdown of liquid fires	Multi-purpose, including solids	More effective per kg on liquid fires
Residue	Alkaline, easy to clean up	Acidic, can corrode metals when moist	Alkaline
Typical use	Kitchens, garages, fuel and oil storage, vehicles	Offices, homes, general use	Oil, gas and aviation facilities

Important: BC (sodium bicarbonate) and ABC (monoammonium phosphate) powders should never be mixed in the same extinguisher or filling line. The alkaline and acidic powders react, which can cause caking and pressure build-up.

Sodium Bicarbonate for Fire Extinguisher Powder Manufacturers

The performance of BC powder depends on the quality of the sodium bicarbonate. These are the properties powder producers usually check.

Particle Size

A fine, controlled particle size distribution is key to extinguishing performance and to an even discharge from the extinguisher.

Purity & Moisture

High NaHCO₃ content and low moisture help prevent caking and keep the powder free-flowing during long storage under pressure.

Batch Consistency

Consistent quality from batch to batch makes it easier to meet the performance tests of fire extinguisher standards.

Specifications and a COA for our industrial grade sodium bicarbonate are available on request. Tell us the particle size you need.

Why Source Sodium Bicarbonate from Pars?

A direct Iranian manufacturer supplying fire extinguisher powder producers and fire safety companies.

Direct ManufacturerTwo production plants in Mashhad and Shiraz, with no traders in between.

Large CapacityA combined monthly capacity of over 24,000 tons for reliable bulk supply.

Bulk Packaging25 kg bags and jumbo bags (big bags) for industrial and export orders.

Technical SupportHelp with specifications and particle size requirements, with a COA on request.

Export Markets

We welcome inquiries from fire extinguisher and powder manufacturers, importers and distributors in:

Russia

Belarus

Kazakhstan

Uzbekistan

Turkmenistan

Kyrgyzstan

Tajikistan

Armenia

Azerbaijan

Iraq

Afghanistan

Pakistan

Turkey

UAE

Learn More

Read our complete guide to how baking soda works in fire extinguishers.

Sodium Bicarbonate in Firefighting: Full Guide Industrial Grade Sodium Bicarbonate Sodium Bicarbonate in Oil Drilling

Frequently Asked Questions

Why is sodium bicarbonate used in fire extinguishers?

Sodium bicarbonate interrupts the chemical chain reaction in the flame, absorbs heat as it decomposes and releases carbon dioxide. Together these effects quickly put out flammable liquid fires.

Which fire classes can sodium bicarbonate extinguishers be used on?

Sodium bicarbonate (BC) powder is used on Class B fires (flammable liquids), on flammable gases (Class C in Europe) and on fires involving energized electrical equipment (Class C in the US). It is not recommended for Class A fires involving wood, paper or textiles.

What is the difference between BC and ABC fire extinguisher powder?

BC powder is based on sodium or potassium bicarbonate and is designed for liquid, gas and electrical fires. ABC powder is based on monoammonium phosphate and also works on solid materials. The two powders must never be mixed.

Is baking soda flammable?

No. Sodium bicarbonate is not flammable or combustible. When heated, it releases carbon dioxide, which is why it is used to fight fires.

Can household baking soda be used as a fire extinguisher?

Baking soda can smother a very small grease fire in a pan, but it is not a substitute for a certified fire extinguisher. Commercial BC powder uses sodium bicarbonate with a controlled particle size and flow additives so it can be discharged effectively.

Do you supply sodium bicarbonate to fire extinguisher powder manufacturers?

Yes. Pars Baking Soda Group supplies industrial grade sodium bicarbonate in 25 kg bags and jumbo bags, and we welcome inquiries from powder manufacturers in Russia, Central Asia and neighboring countries. Specifications and a COA are available on request.

Need Sodium Bicarbonate for Fire Extinguisher Powder?

Tell us the quantity, particle size and destination country you need. Contact Pars Baking Soda Group for specifications, a COA, bulk pricing and export supply.

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