Is Blue Def Flammable : Uncovering the Flammability of Blue Def

Is Blue DEF Flammable?

As the popularity of diesel-powered vehicles continues to rise, so does the use of Diesel Exhaust Fluid (DEF) to reduce harmful emissions. DEF is a solution that consists of 32.5% urea and 67.5% deionized water. One brand of DEF, often referred to as Blue DEF, has gained significant attention. One common question that arises is whether Blue DEF is flammable or not.

Blue DEF bottle

The Chemistry of Blue DEF

To understand the flammability of Blue DEF, it’s essential to examine its chemical composition. Blue DEF contains a high concentration of urea, which is not a flammable substance. Urea is commonly used in various industries, including agriculture and cosmetics, without posing any significant fire hazards.

Additionally, urea has a relatively high ignition temperature, which is the minimum temperature required to initiate a combustion reaction. The ignition temperature of urea is around 425 degrees Celsius (797 degrees Fahrenheit). This indicates that urea is not easily flammable and requires extremely high temperatures to catch fire.

Is Blue Def Flammable  : Uncovering the Flammability of Blue Def


Flammability Factors

While Blue DEF itself is not flammable, it is essential to consider other factors that can affect its flammability. These factors include the storage and handling conditions of the DEF. Here are a few important points to consider:

Factors Impact on Flammability
Temperature DEF should be stored between 12°F and 86°F (-11°C and 30°C). Higher temperatures can accelerate the release of ammonia gas, which is flammable.
Exposure to Flames Direct exposure to an open flame can lead to the decomposition of urea, releasing flammable gases.
Contamination Contaminants, such as gasoline or oil, mixed with DEF can increase its flammability. It is crucial to store DEF in dedicated containers and avoid cross-contamination.

Safety Measures

Although Blue DEF itself is not flammable, it’s important to follow some safety measures to ensure proper handling and storage:

  1. Store DEF in approved containers: Always use dedicated containers designed for DEF storage to prevent contamination and maintain its integrity.
  2. Keep DEF away from open flames: To avoid any potential reaction, it is advisable to keep DEF away from direct contact with open flames or any ignition sources.
  3. Avoid extreme temperatures: Store DEF within the recommended temperature range mentioned earlier to prevent the release of flammable gases.
  4. Proper disposal: When disposing of DEF, follow local regulations and guidelines to ensure environmental safety.

By adhering to these safety measures, the handling and storage of Blue DEF can be done without any significant risk or concerns.

Is Blue Def Flammable  : Uncovering the Flammability of Blue Def


Frequently Asked Questions Of Is Blue Def Flammable : Uncovering The Flammability Of Blue Def

Is Blue Def Flammable?

Yes, Blue Def is flammable. It contains a chemical called urea, which is highly combustible.

How Does Blue Def Work?

Blue Def works by injecting diesel exhaust fluid into the selective catalytic reduction (SCR) system of diesel vehicles. This fluid helps convert harmful nitrogen oxides into harmless nitrogen gas and water vapor.

Is Blue Def Safe For All Diesel Vehicles?

Yes, Blue Def is safe for all diesel vehicles equipped with a selective catalytic reduction (SCR) system. It is specifically formulated to meet the requirements of these vehicles.

Where Can I Buy Blue Def?

Blue Def can be purchased at most automotive supply stores, truck stops, and online retailers. It is readily available and easy to find for diesel vehicle owners.


Blue DEF is an important component in reducing harmful emissions from diesel engines. While Blue DEF itself is not flammable, it is crucial to handle and store it properly to maintain its integrity and avoid any potential hazards. By following the recommended safety measures and guidelines provided by the manufacturer, you can use Blue DEF safely without worrying about flammability issues.

Updated: January 5, 2024 — 6:58 pm