OEM Class D High Quality Fire Extinguisher Agent Dry Chemical Powder OEM Class D High Quality Fire Extinguisher Agent Dry Chemical Powder
OEM Class D High Quality Fire Extinguisher Agent Dry Chemical Powder OEM Class D High Quality Fire Extinguisher Agent Dry Chemical Powder


OEM Class D High Quality Fire Extinguisher Agent Dry Chemical Powder

Share to:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button
Macro's OEM Class D dry chemical powder is a specialist fire extinguisher agent comprising 80% sodium chloride content. With a Class D rating, the dry powder is primarily used to put out Class D fires, which can be challenging to extinguish with conventional fire combating equipment.
These fires involve combustible active metals such as titanium, magnesium, zirconium, potassium, and sodium. The metals absorb oxygen and water vapor from the air producing combustible compounds like alkaline gases and hydrogen.


OEM Class D high-quality dry powder is designed to cover the combustible metal, separating it from oxygen in the air, and limiting chemical reactions and damage. It does not react with the metal material ensuring safe and effective application. Other extinguishing agents like water can easily react with these substances, causing the fire to increase and threatening the safety of the user.

Product Features of Class D Dry Powder Include

  • Class D Rating – highly effective against class D fires involving combustible soft metals. The agent has a high extinguishing capacity to quickly and efficiently put out these often-difficult fires.

  • Good Fluidity – contains a flow-enhancing agent for free-flowing application. The product is highly resistant to caking and lumping.

  • Chemical Stability – comprises high-quality tested ingredients that are chemically stable to ensure safe application.  

  • Compact composition to ensure easy refilling into different types of fire extinguishers.

  • It is non-toxic to humans and animals.

Specification of Class D Fire Extinguishing Powder


Specification Data

Sodium Chloride Content

≥ 80%

Bulk Density (g/ml)


Sieve Analysis

40µm – 35±8.0

63µm – 22±8.0

125µm – 5±5.0

Fluidity Test

Not exceeding average flow time of 8s

Water Repellency

No complete absorption of water drops is observable

Resistance to Caking & Lumping

No lumps retained on the 452µm sieve

Moisture Content

≤0.25 %


Light Blue regular color (customizable)

What raw material is used when making ABC powder?

The primary raw materials used when making ABC powder include silicon dioxide, pigment, silicon oil, ammonium phosphate, etc.

What is the purpose of using silicon oil?

A.      Preventing moisture absorption;

B.      Improves fluidity;

C.      Increased fire extinguishing properties.

What is the highest temperature that ABC powder can withstand?

ABC powder can withstand temperatures ranging from -30C-60C.

Which types of fires can ABC powder be applied to?

Class A fires, Class B fires, Class C fires.

What chemical reaction occurs when you mix ABC powder with an organic solution or other types of solutions, including water?

Mixing ABC powder with organic solutions destroys the silicon oil surrounding the particles. Adding water to the mixture causes the ABC powder to cake because it absorbs the water particles or moisture.

Can you mix BC powder with ABC powder in the same extinguisher?

ABC powder's main component is acidic ammonium phosphate, while that of BC powder is alkaline sodium bicarbonate. Mixing the two powders will cause them to lump up or cake, and the resultant gas could increase the fire extinguisher’s internal pressure. The fire extinguisher may rupture and blow when the increase in pressure becomes significant, and this could lead to damaged property or bodily harm.

How does Macro manage its product's quality control?

Macro conducts quality control throughout each step of the process, including sourcing raw materials and inspecting finished products. For instance, we sample each batch of raw materials for making ABC powder, ensuring it has the correct particle size and moisture content.

Next, we sieve test the semi-finished product during production and test for color and bulk density. The finished product's primary chemical content, hygroscopicity, and water repellency is also inspected.

The steel sheet's thickness is also tested when making fire extinguisher cylinders and inspect the neck ring’s thread. Our team test the semi-finished cylinder for leakage after welding and polishing it. Lastly, we also test for the cylinder's burst pressure and the thickness of the paint.

What makes Macro different?

Macro has been a professional OEM/ODM supplier of ABC powder for leading companies in over 20 countries. Our employers are valuable, and we aim to create a good workplace where employees are treated with respect, fairness, and dignity. We also listen to the market and place customers at the center of our services.