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AdBlue® is produced by mixing 32.5% high-purity, automotive-grade solid urea with 67.5% demineralized water, forming a colorless aqueous urea solution (AUS 32). This precise mixture, adhering to ISO 22241 standards, is essential to avoid destroying vehicle Selective Catalytic Reduction (SCR) catalysts, ensuring, as described on the Palamatic Process website, the effective reduction of nitrogen oxide (NOx) emissions in diesel engines.
Key Aspects of Urea for AdBlue Production
- Grade Requirements: Must be high-purity/automotive-grade, not agricultural fertilizer urea, which contains harmful contaminants like urea-formaldehyde.
Production Steps
- Water Treatment: Demineralization is necessary to remove impurities, often via reverse osmosis.
- Mixing: Combine 325 kg of urea with 675 kg of demineralized water to create one metric ton of AdBlue.
- Filtration & Cooling: The solution is filtered, cooled, and stored, as described on the Vaisala website.
Important Distinctions
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Web results
Urea in AdBlue, where does it come from?
Palamatic Process
https://www.palamaticprocess.com › blog › urea-in-adb...
Palamatic Process
https://www.palamaticprocess.com › blog › urea-in-adb...
In fact, urea can be created artificially from carbon dioxide (CO2) and ammonia (NH3). The latter is itself synthesized through a reaction between dinitrogen ( ...Read more
Discussions and forums
ELI5- DEF/AdBlue - how chemists create artificial urea
Reddit ·
r/explainlikeimfive
· 10+ comments
· 1 year ago
ELI5- DEF/AdBlue - how chemists create artificial urea
Reddit ·
r/explainlikeimfive
· 10+ comments
· 1 year ago
AdBlue (BlueDEF in the US) is made from water and urea (synthesized but ...
Reddit ·
r/composting
· 30+ comments
· 4 years ago
AdBlue (BlueDEF in the US) is made from water and urea (synthesized but ...
Reddit ·
r/composting
· 30+ comments
· 4 years ago
Automotive grade urea 46% for adblue production
Facebook ·
Urea Supplier group
· 6 comments
· 9 months ago
Automotive grade urea 46% for adblue production
Facebook ·
Urea Supplier group
· 6 comments
· 9 months ago
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People also ask
How to make urea for AdBlue?
o Take 67.5% deionized water in a stainless steel mixing tank. o Heat the water to 40–50°C to help dissolve the urea faster. o Gradually add 32.5% high-purity urea into the heated water while stirring. o Ensure the urea is completely dissolved to form a clear solution. o Maintain a pH of 9.0–10.0 during mixing.
How to Make AdBlue (Diesel Exhaust Fluid) Using Urea
atdmco.com
https://atdmco.com › uploads › 2025/02 › How-t...
atdmco.com
https://atdmco.com › uploads › 2025/02 › How-t...
PDF
Which urea is used in AdBlue?
Aqueous urea solution 32.5%, more simply AUS 32 DEF, or AdBlue®, is manufactured to meet ISO 22241 standards to enable use in modern diesel engines. AdBlue® is a registered trademark of the German Association of the Automobile Industry (VDA).
AdBlue® Specifications - ISO 22241 Standards - Crown Oil
Crown Oil
https://www.crownoil.co.uk › fuel-specifications › adblu...
Crown Oil
https://www.crownoil.co.uk › fuel-specifications › adblu...
What is 32.5% urea?
Liquid solution composed of high purity urea and deionized water. It is mostly used in flue gas purification technologies, allowing important reductions of nitrogen oxides (NOx) emissions.
Urea solution 32.5% - Azomureș
Azomureș
https://www.azomures.com › urea-325
Azomureș
https://www.azomures.com › urea-325
Web results
How to Make AdBlue (Diesel Exhaust Fluid) Using Urea
atdmco.com
https://atdmco.com › uploads › 2025/02 › How-t...
atdmco.com
https://atdmco.com › uploads › 2025/02 › How-t...
PDF
AdBlue, also known as Diesel Exhaust Fluid (DEF), is a solution composed of 32.5% high-purity urea and 67.5% deionized water.Read more
2 pages
High Quality Technical Grade Urea 46% For Making AdBlue
Guangzhou EverBlue Technology Co.,Ltd.
http://www.everbluesolution.com › Other products
Guangzhou EverBlue Technology Co.,Ltd.
http://www.everbluesolution.com › Other products
Technical grade urea can be used in SCR reaction to reduce the NOx pollution in exhaust gas rom combustion rom diesel, dual fuel, and lean-burn natural gas ...Read more
DEF and AdBlue Production | Urea Technology
thyssenkrupp Uhde
https://www.thyssenkrupp-uhde.com › urea-plants › def-...
thyssenkrupp Uhde
https://www.thyssenkrupp-uhde.com › urea-plants › def-...
Urea solution for DEF and AdBlue®. Aqueous urea solution can be injected into the exhaust gas stream of a combustion process in order to lower its emissions of ...Read more
the concentration of AdBlue,How does AdBlue work？
Shandong New Blue Environmental Protection Technology Co.,Ltd
https://www.newbluechina.com › News
Shandong New Blue Environmental Protection Technology Co.,Ltd
https://www.newbluechina.com › News
Sep 9, 2024 — After injecting Urea Solution For Vehicle (AdBlue®/DEF Fluid) , urea (CO (NH2) 2) will decompose and convert into ammonia gas (NH3) at high ...Read more
What Is Urea in AdBlue? The Key Component Behind ...
Atmosfer Makina
https://atmosfermakina.com › what-is-urea-in-adblue-th...
Atmosfer Makina
https://atmosfermakina.com › what-is-urea-in-adblue-th...
In AdBlue, which is also known globally as Diesel Exhaust Fluid (DEF), urea is mixed with deionized water to form a 32.5% urea solution. This mixture is non- ...Read more
Automotive Grade Urea (SCR)
Risso Fertilizer
https://risso-chemical.com › Product
Risso Fertilizer
https://risso-chemical.com › Product
Automotive-grade urea is the key raw material for producing AdBlue (DEF/AUS 32), a high-purity urea solution designed to reduce nitrogen oxide (NOx) emissions.Read more
How is AdBlue made?
Palamatic Process
https://www.palamaticprocess.com › blog › how-is-adbl...
Palamatic Process
https://www.palamaticprocess.com › blog › how-is-adbl...
AdBlue is an aqueous solution with a mass concentration of 32.5% urea. In order to produce 1 ton of product, the AdBlue production line must introduce 325 kg ...Read more
