Automotive Grade Urea (AdBlue/DEF Grade) – High-Purity 46% Urea for SCR Emission Control Systems

Automotive Grade Urea is a high-purity urea product specifically manufactured for use in Selective Catalytic Reduction (SCR) systems in modern diesel engines. Unlike agricultural-grade urea fertilizers, automotive grade urea is produced under strict quality control standards to ensure minimal biuret, aldehydes, insoluble matter, and trace metal contaminants. It serves as the primary raw material in the production of Diesel Exhaust Fluid (DEF), commonly known as AdBlue.

Containing 46% nitrogen in its pure urea form (CO(NH₂)₂), automotive grade urea is dissolved in deionized water at a concentration of 32.5% to produce DEF solution. When injected into the exhaust stream of diesel engines equipped with SCR technology, DEF breaks down into ammonia (NH₃), which reacts with harmful nitrogen oxides (NOx). This chemical reaction converts NOx emissions into harmless nitrogen (N₂) and water vapor (H₂O), significantly reducing air pollution and ensuring compliance with global emission standards such as Euro 5, Euro 6, EPA, and other regulatory frameworks.

The purity of automotive grade urea is critical for protecting SCR catalysts and ensuring system longevity. Impurities such as heavy metals, calcium, sodium, or organic residues can damage injectors, clog dosing systems, and reduce catalyst efficiency. Therefore, automotive grade urea must comply with internationally recognized standards such as ISO 22241, which defines strict chemical and physical requirements for DEF production.

Key Quality Specifications:

• Urea Content: ≥ 99.0% purity
• Nitrogen Content: 46%
• Low Biuret Content
• Minimal Aldehydes
• Very low insoluble matter
• Free from harmful trace metals

Automotive grade urea is typically supplied in prilled or granular white crystalline form. It is highly soluble in water and must be stored in dry, clean conditions to prevent contamination and moisture absorption. Packaging options commonly include bulk bags, 25 kg bags, or bulk container shipments for industrial DEF manufacturing facilities.

It is important to distinguish automotive grade urea from agricultural fertilizer-grade urea. Fertilizer-grade products do not meet the purity specifications required for SCR systems and may cause severe engine and emissions system damage if used in DEF production.

Benefits of Automotive Grade Urea:

• Ensures optimal SCR system performance
• Reduces NOx emissions effectively
• Meets international DEF production standards
• Protects catalysts and engine components
• Supports compliance with environmental regulations

Automotive grade urea plays a vital role in reducing diesel vehicle emissions worldwide. Its use in DEF production supports cleaner transportation, improved air quality, and adherence to environmental sustainability targets.

When handled and stored correctly, Automotive Grade Urea provides a reliable, high-performance raw material solution for DEF manufacturers and automotive emission control systems globally.

Automotive Grade Urea (AdBlue / DEF Grade)

Automotive Grade Urea is a high-purity 46% urea designed specifically for Selective Catalytic Reduction (SCR) emission control systems used in diesel engine vehicles. It supports the reduction of nitrogen oxide emissions to meet strict environmental standards.

Product Features

• High-purity urea suitable for SCR systems

• Free of biuret and contaminants

• Ensures optimal exhaust treatment performance

• Stable granule size and excellent solubility

• Meets automotive-grade emission control requirements

Applications

• Diesel vehicle SCR emission reduction systems

• AdBlue / DEF production

• Industrial applications requiring high-purity urea

• Heavy-duty trucks, buses, and off-road machinery