What is Liquid Urea?
Liquid urea is a water-soluble, nitrogen-rich chemical compound primarily composed of urea dissolved in deionized water. Unlike its granular or prilled forms, liquid urea is in a ready-to-use state, making it highly efficient for both agricultural and industrial applications. It is commonly used in liquid fertilizer blends, diesel exhaust fluid (DEF), and as a key ingredient in certain resin manufacturing processes. Its stable concentration, ease of handling, and compatibility with automated systems make it a preferred choice for industries requiring consistent nitrogen input or NOx emission control. Liquid urea produced by Iran Petro Export meets international purity standards, ensuring maximum performance across use cases.
- Chemical Properties and Composition
- Comparison with Granular and Prilled Urea
Chemical Properties and Composition
Liquid urea typically contains 31% to 40% urea by weight, dissolved in deionized or distilled water to form a stable aqueous solution. The compound’s chemical formula is CO(NH₂)₂, and in liquid form, it remains non-toxic, colorless, and odorless, with a neutral to slightly alkaline pH (around 7.5–9 depending on concentration). It exhibits excellent solubility, low biuret content (typically under 0.5%), and consistent density—making it ideal for precision applications like fertilizer injection systems or SCR (Selective Catalytic Reduction) in diesel engines. Iran Petro Export ensures the production of high-purity liquid urea using refined feedstock and stringent quality control measures, minimizing contaminants such as heavy metals and formaldehyde.
Comparison with Granular and Prilled Urea
While granular and prilled urea are solid, dry forms commonly used in agriculture, liquid urea offers distinct advantages in terms of application efficiency and versatility. Granular urea is favored for broad-acre spreading, and prilled urea dissolves quickly but may produce dust and require manual handling. In contrast, liquid urea eliminates the need for dissolution, enabling direct injection into fertigation systems, foliar sprays, or DEF tanks for emissions control. It also ensures uniform distribution of nitrogen and integrates easily with other liquid fertilizers or additives. For industrial clients, liquid urea streamlines dosing in automated systems, reducing downtime and labor costs. Choosing between forms depends on your infrastructure, but for precision, speed, and safety—liquid urea is the superior choice in modern operations.
Industrial and Agricultural Applications of Liquid Urea
Liquid urea serves as a critical input across both industrial and agricultural sectors, offering high solubility, reliable nitrogen content, and ease of integration into automated systems. In agriculture, it is widely used in the preparation of UAN (Urea Ammonium Nitrate) solutions and foliar fertilizers, delivering fast-absorbing nitrogen to crops through irrigation and spraying methods. Its liquid form enables more precise dosing and minimal application losses compared to solid alternatives. On the industrial side, liquid urea is an essential component in diesel exhaust fluids (DEF) like AdBlue and AUS 32, used to reduce nitrogen oxide (NOx) emissions in vehicles and machinery. It’s also used in resin, adhesive, and plastic production processes, where consistent nitrogen quality is crucial. These dual-use benefits make liquid urea a flexible and high-demand commodity for global markets.
- Use in Fertilizer Formulations (UAN & Foliar Spray)
- Role in NOx Emission Reduction (DEF / AUS 32 / AdBlue)
- Utility in Resin and Adhesive Manufacturing
Use in Fertilizer Formulations (UAN & Foliar Spray)
Liquid urea is a key ingredient in Urea Ammonium Nitrate (UAN) solutions and foliar spray fertilizers, both of which are widely used in modern, high-efficiency farming. UAN, a stable blend of urea, ammonium nitrate, and water, provides crops with readily available nitrogen in a form that's ideal for precision agriculture and fertigation systems. Liquid urea also enables direct foliar application, allowing plants to absorb nutrients quickly through their leaves—especially beneficial during critical growth stages or periods of nitrogen deficiency. Unlike solid urea, liquid formulations reduce volatilization losses and ensure more uniform nutrient distribution. Farmers benefit from better nitrogen use efficiency (NUE), reduced labor, and compatibility with integrated nutrient management systems. Iran Petro Export supplies high-purity liquid urea, optimized for seamless mixing and performance in these advanced fertilizer applications.
Role in NOx Emission Reduction (DEF / AUS 32 / NOx Control)
Liquid urea is essential in the production of Diesel Exhaust Fluid (DEF), also referred to as AUS 32, a solution used in diesel engines to reduce harmful nitrogen oxide (NOx) emissions. In this process, known as Selective Catalytic Reduction (SCR), the urea solution is injected into the exhaust system, where it chemically transforms NOx into harmless nitrogen gas and water vapor. To be effective and safe for engine systems, the urea must be of high purity with low levels of biuret and heavy metals. Iran Petro Export supplies liquid urea that complies with international standards for NOx emission control, offering reliable performance for use in both on-road and off-road diesel-powered machinery.
Utility in Resin and Adhesive Manufacturing
Liquid urea is a critical raw material in the production of various urea-based resins, including urea-formaldehyde (UF) and melamine-urea-formaldehyde (MUF) resins. These resins are widely used in the manufacture of plywood, particleboard, fiberboard, and adhesives due to their strong bonding capabilities and cost-efficiency. In industrial applications, using liquid urea instead of solid forms offers advantages such as more accurate dosing, faster reaction times, and improved process control, especially in large-scale production environments. High-purity liquid urea ensures consistent polymerization and reduces the risk of impurities that can compromise resin quality or end-product performance. Iran Petro Export supplies liquid urea tailored for resin manufacturing, supporting industries that demand reliability and compliance with international product standards.
Liquid Urea Specifications and Quality Assurance
At Iran Petro Export, liquid urea is produced to meet stringent international quality benchmarks, ensuring consistent performance across agricultural and industrial applications. Our product is characterized by high nitrogen concentration, low biuret content, and the absence of harmful impurities such as heavy metals and formaldehyde residues. Whether used in crop nutrition systems or chemical processing, precision and reliability are non-negotiable. That’s why we implement robust testing protocols, quality certifications, and documentation standards for every batch. From production to packaging, each step is monitored to guarantee product integrity, safety in handling, and compatibility with diverse operational requirements. This commitment to quality not only supports regulatory compliance but also maximizes efficiency and user confidence worldwide.
- Purity, Concentration, and Density Standards
- Quality Testing, Certification, and Compliance
- Recommended Storage and Handling Guidelines
Purity, Concentration, and Density Standards
High-quality liquid urea must adhere to strict chemical specifications to ensure safe and efficient use in both agricultural and industrial contexts. The typical concentration of urea in solution ranges between 31% to 40% by weight, depending on its intended application. For emission control purposes (e.g., NOx reduction), the standard is usually 32.5% high-purity urea dissolved in deionized water. Purity levels are critical, with biuret content kept below 0.5% and the product free from heavy metals, chloride ions, and insoluble matter. The specific gravity of liquid urea generally ranges from 1.09 to 1.13 g/cm³ at 20°C, and the solution maintains stability at ambient temperatures. Iran Petro Export ensures that every batch meets or exceeds global purity and density standards, offering full traceability and documentation with each shipment.
Quality Testing, Certification, and Compliance
At Iran Petro Export, quality control is an integral part of the liquid urea production and export process. Each batch undergoes comprehensive laboratory analysis to verify chemical composition, purity, biuret levels, and absence of contaminants. Testing is performed using standardized methods in accordance with ISO and ASTM protocols, ensuring the product meets the specific requirements of international markets. Certificates of Analysis (COA) and Material Safety Data Sheets (MSDS) are provided for full transparency. Furthermore, our operations comply with national export regulations and the technical standards set by target regions, including environmental and safety regulations related to DEF production and agricultural use. This commitment to compliance and certification ensures that our clients receive a product they can trust, backed by verifiable documentation.
Recommended Storage and Handling Guidelines
To maintain the integrity and effectiveness of liquid urea, proper storage and handling are essential. The solution should be stored in sealed, corrosion-resistant containers made of materials like polyethylene, stainless steel, or specially coated mild steel. Ideal storage temperatures range between 5°C and 30°C to prevent crystallization or degradation. The product should be protected from direct sunlight, contamination, and temperature extremes. In industrial or agricultural settings, it’s important to use dedicated transfer lines and pumping systems to avoid cross-contamination with other chemicals. Personal protective equipment (PPE), including gloves and goggles, is recommended during handling to prevent skin or eye irritation. Iran Petro Export provides detailed storage and handling guidelines with every shipment, helping clients maintain product quality and ensure workplace safety.
Request a Quote or Speak to Our Experts
Whether you are sourcing liquid urea for agriculture, industrial applications, or emissions control, our team at Iran Petro Export is ready to support your needs with customized pricing, technical insights, and logistics planning. We understand that each client has unique requirements, and we offer tailored solutions for bulk orders, recurring supply contracts, and regional compliance needs. Our export specialists provide fast, clear quotations and assist with documentation, certification, and delivery coordination. To get started, simply contact us through our inquiry form or reach out directly to our sales department. We're committed to responsive communication, transparent pricing, and long-term partnerships built on trust and performance.
Contact Our Sales Team for Pricing
For accurate and up-to-date pricing on liquid urea, our dedicated sales team is ready to assist you with personalized quotes based on order volume, packaging type, destination, and delivery terms. We work with buyers across agriculture, manufacturing, logistics, and environmental sectors, offering flexible options for both small-scale and bulk procurement. Whether you require spot pricing or long-term supply agreements, we ensure transparent cost structures with no hidden fees. Simply provide your product specifications and destination details, and our experts will respond promptly with a tailored proposal that aligns with your budget and delivery timeline.
Custom Solutions for Distributors and Large Orders
At Iran Petro Export, we understand the complexities of large-scale procurement and distribution. That’s why we offer customized solutions designed specifically for importers, wholesalers, and strategic partners handling bulk volumes of liquid urea. From flexible packaging options like IBC tanks and ISO containers to coordinated multi-shipment logistics, we adapt our services to match your operational needs. We also assist with private labeling, documentation in multiple languages, and compliance with destination-country regulations. For recurring orders, we offer fixed-term pricing and priority loading schedules. Our goal is to simplify the sourcing process and help you maintain reliable supply lines while maximizing value and efficiency.