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What are the raw materials for automotive urea?

1 Answers

StAxel

07/28/25 5:07pm

Automotive urea refers to a urea aqueous solution with a urea concentration of 32.5% and a solvent of ultra-pure water. The raw materials are specialized automotive urea materials and ultra-pure water. Automotive urea is an essential product for heavy-duty diesel vehicles to meet the National IV emission standards. Here is relevant information about automotive urea: 1. Introduction: Heavy-duty trucks, buses, and other diesel vehicles must adopt suitable SCR systems for exhaust treatment to meet the National IV emission standards. This system requires the use of a urea solution to treat nitrogen oxides in the exhaust. Therefore, automotive urea solution has become an essential product for heavy-duty trucks and buses to comply with the National IV emission standards. 2. Usage Instructions: Automotive urea must use Grade 1 ultra-pure water from the electronics industry. Since the SCR catalyst carrier is highly susceptible to metal ion poisoning, which would deactivate the catalyst, automotive urea solution must use Grade 1 ultra-pure water from the electronics industry. The automotive urea solution begins to freeze at -11°C and completely solidifies at -20°C in practical use. Current technologies involve adding modifiers to lower the freezing point of the solution and external heating devices to prevent solidification.

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